The 5 Hardest Quadratic Inequalities Exam Questions | Grade 9+ Series | GCSE Maths Tutor

[@TheGCSEMathsTutor]

If anyone would like to support the channel you can buy me a coffee here: www.buymeacoffee.com/gcsemathstutor Thank you for all of your support! 😁🙏🏼

[@Itsana004]

Life saver! Now I find them soo easy, before when I first saw the question in the mock I totally freaked out! My predicted grade is an 8 currently, hopefully after watching your videos I will get a 9 Inshallah

[@TheGCSEMathsTutor]

Amazing to hear! Hopefully these grade 9 videos can help you out then, make sure you keep working on the grade 7-9 playlist and the grade 9 playlist as well as the ‘5 Hardest Questions’ playlist that I have just made and I am sure that you will do it 🙏🏼 Inshallah

[@reoqq3842]

InshAllah alhamdulillah

[@R5ive]

What did you get

[@mohammadhosseinasadifard9973]

Appreciate the hard work I went from5 to7 in 2months because of you

[@TheGCSEMathsTutor]

That is absolutely incredible! Hats off to you, it’s you that has gone out of the way and put the hard work in so thank you for making the channel worthwhile!! Keep it up!! 😁🙏🏼

[@alanszafarczyk4068]

So you were in Each Grade for 1 month

[@Near800]

@@alanszafarczyk4068 bruh what the ? wym "in each grade" he's talking about the grading system bruh

[@jameschester7839]

That last question.. nice surprise bro! I would never of been able to answer that before watching your last video on quadratic inequalities, I got it all except for the last step and I completely get it now! I won’t spoil the surprise for other but that just gave me such a boost after finishing that one, my G right here!!! 👊🏽👊🏽👊🏽

[@TheGCSEMathsTutor]

James Chester Haha love this! Great to hear that a past video has impacted you on this one, keep up the great work and thank you for the kind words 😁🙏🏼

[@pooyazargari9753]

I just found your channel in the easter holiday and I am binge watching your videos. They are all amazing! Thanks a bunch:)

[@mystic6970]

Good luck to everyone who has their GCSE'S next year. My tip is to revise early and work hard and hopefully you will come out with at least a grade 7 or above. Good luck guys 👊✌!

[@yourlocalpostman]

And now we have our GCSEs in a few weeks haha, time sure does fly

[@mystic6970]

@@yourlocalpostman Yeah good luck 👍

[@yourlocalpostman]

@@mystic6970 you too, aiming for a 9 Inshallah

[@mystic6970]

@@yourlocalpostman Thanks In Sha Allah

[@TamilEelam1]

Now we are nearly in the middle of our exams! I hope God helps me in getting 9's!

[@smo18385]

omg when you said it was an a level question i literally gasped. maths used to be one of my stronger subjects, so much so thst i got overconfident and ended up not doing too great in my mocks. quadratic inequalities and generally anything involving graphs, ive always hated but im relived that i understand it now... gives me hope for my exams. thank you so much ive been watching and taking notes off of every single video of yours and genuinely appreciate the effort that goes into your them. :)

[@TheGCSEMathsTutor]

Haha it’s a great little question hope you enjoyed it! I’m so glad to hear that you are finding a new surge in confidence and that the channel is helping, well done on you though for putting all the hard work in and making notes with the videos! Exactly how the channel should be used, please do keep in touch and let me know how you get on! Thank you so much for the kind words, it’s very much appreciated! 😁🙏🏼

[@paulcazza]

Yes - there really must be a lot of effort here - hundreds and hundreds of hours. He just breaks it up into pieces and then shows us that we can do the same. If someone that knows him and hasn't thought about sending his name off to the Palace for an OBE then I think you need to look in the mirror and get on with it. - Actually maybe they already did that and we don't know !! TGMT OBE !!

[@FireFitt]

these type of questions came last year for GCSE's, and love ur videos Sir, keep up the amazing work

[@TheGCSEMathsTutor]

They have come up in every summer and resit exam since the 9-1 exam launch! That is so great to hear, I will do my best! 😁🙏🏼

[@FireFitt]

@@TheGCSEMathsTutor Thanks for the info sir

[@untitledotter]

for the first question you can also just subtract the 9/25 from both sides then use the quadratic formula for the same answer.

[@Dargonskull]

That last A-level question was easier than some vector GCSE questions 💀💀

[@dodgespecialist1334]

Could you do a video on difficult reverse percentage questions, they always trip me and I lose marks. Thanks

[@TheGCSEMathsTutor]

Here are the fundamentals of reverse percentages - kzbin.info/www/bejne/aou8ZHmehbGhotk 😁🙏🏼

[@deangarratt4965]

You're doing a great job with these videos!

[@diamondnether90]

The first one, you can just do |1-x| = 3/5 -3/5 < 1-x < 3/5 And you get the same answer

[@girlonline3742]

In 22:23 why couldn’t you have halved “-2x^2) or “-10” because usually it works for normal numbers (E.g “1/2•4•6=12” like halving 4 to get 2 “2•6=12”. I understand why it’s not correct because we have to show “2x^2-21x+40” but if that wasn’t given I wouldn’t have got that particular quadratic. Could you explain why we can’t half one of the numbers because I want to understand how to work it out without having the answer shown.

[@JP-xk3zu]

Thank you

[@TheGCSEMathsTutor]

No problem at all! 😁🙏🏼

[@Dargonskull]

Can you please make further maths videos as well? 🙏🙏 (AQA) and OCR FMSQ Additional Maths

[@jannatulnaima4278]

This channel>>>>

[@elliottwells2078]

Can you do a video explaining enlargement please. If you’ve already done one let me know

[@TheGCSEMathsTutor]

Enlargements - kzbin.info/www/bejne/f2rEg36tqtZqqZY and Negative Enlargements - kzbin.info/www/bejne/epzGdGavebWLmbM 😁🙏🏼

[@yeeeeee25]

at 9:30 why doesn’t pi cancel out when pi is taken away from pi?

[@TheGCSEMathsTutor]

So for example, 8pi - 5pi = 3pi the pi only cancels out if you are dividing both sizes of an equation by pi 😁🙏🏼

[@evparton544]

Yes sir

[@bruceJR202]

Thanks so much!

[@admiral3814]

For the last question, could you instead put the final answer as 1≤x

[@madbpopye7321]

No you couldn't as that implies that any number under the value of 1 isn't included which is incorrect.

[@malakkabillewis2491]

Outstanding teaching skills! Thank you very much for the excellent explanations.

[@TheGCSEMathsTutor]

Thank you for the kind words that is so great to hear!! 😁🙏🏼

[@humairazaman1288]

What do u think is the best way to prepare for the GCSEs from now on?

[@TheGCSEMathsTutor]

It entirely depends on what works for you, I would be making lots of revision cards on these videos though and revisiting them consistently 😁🙏🏼

[@unnamed6223]

@@TheGCSEMathsTutor what would you include on the revision cards?

[@TheGCSEMathsTutor]

Un Named I would have notes on the front with an example question and hints, then I’d have a blank question on the back that is similar that I could practice on a separate piece of paper just to quickly revisit it! 😁🙏🏼

[@pashtunlion459]

Brilliant!

[@TheGCSEMathsTutor]

Great to hear 😁🙏🏼

[@jayhoa8249]

uno for the 3rd question could you use trig sin(30) to find the perpendicular height

[@cali5635]

thank god i did the first question on a past paper at home if i was in a mock and did the squared root wondering why a 4-5 marker was so easy

[@TheGCSEMathsTutor]

Great news! The marks can be a great indicator that you may have over simplified it sometimes 😁🙏🏼

[@cali5635]

If I look at the marks I may overcomplicate and if I don't ill oversimplify 😅 I'll be sure take the marks into account and find a compromise

[@that_guitar_playerr2704]

@@TheGCSEMathsTutor how do you know when to not square root the brackets?

[@_liampitigala_1796]

U should really make a website

[@TheGCSEMathsTutor]

Already working on it - www.thegcsemathstutor.co.uk 😁🙏🏼

[@darnellbailey5038]

thank youu

[@jakedeclan1997]

Could have solved question 1 by squaring both sides giving x = +or - root 9/25 +1

[@jakedeclan1997]

Should have said square root both sides! sorry

[@TheGCSEMathsTutor]

Yes absolutely, it works for this one question however this question is unique and this method may not work for all questions so I decided to follow a regular process that can be applied to all questions! Well done for spotting this though 😁🙏🏼

[@Masowe.]

i started by square rooting and i got 1 solution which is 8/5......was that my mistake or the method is not working?

[@TheGCSEMathsTutor]

You can square root to start with absolutely! It would give you +/- (3/5) which you can then use in the rearrangement 😁🙏🏼

[@Masowe.]

@@TheGCSEMathsTutor okay i get it thanks!

[@carolineturk9609]

You often don't choose the easiest method. Eg in the first one, why not square root both sides first to find the 2 critical values?

[@TheGCSEMathsTutor]

Because they process wouldn’t work for 95% of other questions with quadratic inequalities involved and also requires the student to remember to keep the +/- symbol in-front of the square root to get the correct inequalities in the solution. The methods I use are selected after trialling with many many students across different abilities to suit the majority! If you have another method though I would always encourage you to use it 😁🙏🏼

[@abdulislam101]

29:58 I understand X>0 but can you explain why X is not 1/2

[@TheGCSEMathsTutor]

Abdul Islam >0 means above the x-axis as above this point the y-values are all greater than 0 😁🙏🏼🙏🏼

[@abdulislam101]

@@TheGCSEMathsTutor OHHhh thanks 😁😁

[@infinity8362]

thank you!!!

[@lc6786]

for question one aren't supposed to make the inequalities equal to zero, so you get -2/5 and -8/5 ?

[@diamondnether90]

If x + a = 0 then x = -a, you need to flip the sign

[@giyantube]

You didn't need to expand the brackets on the first question. I did it in two lines.

[@TheGCSEMathsTutor]

Completely agree with you and if you are happy using that method then go for it! The only issue is that it’s a very unique question and that method doesn’t help with the vast majority of quadratic inequality exam questions, hence why I used the “normal” process, love that you spotted it though!! 😁🙏🏼

[@Rafmee]

3:22 Even if the factorisation works, can we use the quadratic formula? (in a calculator paper)

[@J.246]

yh u can

[@adityashijikumar1131]

Yes you can, however, it may complicate things further. Hope this helped :)

[@abdulislam101]

For the sin(150°) = sin(30°) because 180 = 150 + 30, does this work for tan and cos as well? Or is it only exclusive to sin

[@TheGCSEMathsTutor]

Abdul Islam This is exclusive to Sin, it can be seen visually when looking at the Sin Graph, you can also see from these why others are not supplementary (angles that sum to 180) 😁🙏🏼

[@44bor]

could you not square root the first question?

[@TheGCSEMathsTutor]

You can take a different approach and use this method but it is very specific to this question, this approach may not work if the fraction didn’t square root nicely (without a calculator!) but yes you absolutely could 😁🙏🏼

[@aqibhussain707]

Have you done 3D Pythagoras theorem?

[@TheGCSEMathsTutor]

Aqib Hussain Not exclusively but I have done these questions on 3D trig and pythagoras - kzbin.info/www/bejne/hIXCf4OLrZZplaM 😁🙏🏼

[@rafataziz401]

How to download the questions. Is there any file to download

[@harrylindon7299]

have you got foundation edexcel 2019 November paper?

[@TheGCSEMathsTutor]

Just about to upload the first paper, hoping to get one done each day this week 😁🙏🏼

[@harrylindon7299]

No please I have the paper 1

[@harrylindon7299]

I need paper 2 today please!

[@harrylindon7299]

It would be much appreciate

[@TheGCSEMathsTutor]

Craig Thomson’s Very very sorry but I haven’t got paper 2 yet ☹️

[@watvid1]

Just square root both sides for the first one, much easier

[@lolllhello7718]

👍✨😁

[@aliyahhassan7700]

Lolll Hello shush ur ded at maths

[@lolllhello7718]

salahdeen hassan What?

[@aliyahhassan7700]

Lolll Hello stop asking dumb questions in the other videos

[@lolllhello7718]

salahdeen hassan I don’t ask dumb questions ? Sorry if they offended you

[@TheGCSEMathsTutor]

😁😁🙏🏼🙏🏼

[@nas5834]

25:00 ikr ;-;

[@TISHBOY]

lol