Hardest GCSE Maths Paper 1 Non Calculator Questions - Preparation for May 2019

[@kasumibryant7854]

great video! the only thing I would suggest would be to show us how you simplify each problem, it makes it slightly hard to follow and confusing at some parts if you don't know how to. The main issue for me was how you get to 2x^-3x from 2x^2 - 2x^2cos30. also it was slightly hard to understand during the end of the video how you simplified everything to get 1-2root3 / 200 x^2

[@isobar5857]

Your explanations are brilliant...thanks.

[@smithyboy572]

4:00. Hi, I'm confused about the +9 in the quadratic equation, shouldn't it be -9 as you need take 9 from both side to get 0? Thanks!

[@teddy0663]

He didn’t minus 9, he kept it there and made the left side equal 0 so -100x + 100xsquared

[@anneyhailinghenry185]

21:31 Q: how is it going from 2x^2-square root 3 x^2 -200 to over -200 +1

[@Noah-bx3li]

because you have divided both sides by -200, so -200*-200 gives +1

[@anneyhailinghenry185]

@@Noah-bx3li thanks

[@Noah-bx3li]

@@anneyhailinghenry185 np gl on ur maths. Ive got mine today as well

[@zaraanwar5108]

at 4:11 isn’t it suppose to be a negative 9 ?

[@abekesssss]

Yeh, he made a little mistake

[@finnwilde]

No he didn't make a mistake. (plz know what you're talking about before telling someone they're wrong Abylay) He did the equivalent of subtracting 9 - as you say - to get -100x^2 + 100x - 9 = 0 and then multiplied both sides by -1 (to make the coefficient of x^2 positive) to get 100x^2 - 100x + 9 = 0. Or you can visualise it as him subtracting -100x^2 and 100x from the left-hand side of the equation to get 0 = 100x^2 - 100x + 9 So yeah, he didn't make a mistake, he just skipped a small step which has confused you a little bit. Hope that helps and have a good day!

[@isobar5857]

Easy Maths. Would you mind if I passed on these problems and your elegant solutions to " Mind your decisions"? I would like to see his method of solving them. With your permission , and thanks for great video solutions.

[@ゆじ-d5i]

15:08 shouldn't you have multiplied the 1/2 onto 32/18 which gets you 16/9, then you multiply it by 9 to get the correct unit?

[@costrix5697]

he cancelled the 9 and 18 to get 1/2 and then multiplied 32 by 1/2

[@ゆじ-d5i]

@@costrix5697 yeah i realised after that comment

[@zelihacagis640]

why did he make x=9/10 and not x=1/10?

[@trulysetahul8458]

yeah I thought he said that x=9/10 was greater than 1, so we had to use 1/10. Thats just confused me! :(

[@lordangel9563]

@@trulysetahul8458 his problem was with the way he denoted his probabilities, he shouldn't have denoted the probability of the win as x in the first place, that should have been the probability of losing, 1-x as the probability of winning game a, 4x as the probability of winning game b and 1-4x the probability of losing game b; and it makes sense.. why even denote a probability with x at the start when u didn't have information given about it by the question, just call em P(winIA) if u really want to

[@Yaya-jj2jq]

I don't understand a2= x2+x2-2(x)(x)cos30? Is this a formula?

[@mzarmc2350]

小静家常Jing'Special a2 = b2+c2-2bccosA is the cosine rule, yes.

[@costrix5697]

yes it's the cosine rule

[@oliverwhittington6434]

cheers pal

[@cosmoszeromusic]

Thanks a lot bro

[@rybak908]

Is this foundation?

[@EasyMathsChannel]

No these are higher questions only. Mainly for students who are aiming for a grade 9.

[@ericcheltenham7001]

If this were foundation we would be in Korea

[@enlightenedsoul8897]

Maybe in China, but not here. Their education system has kids learning complex algebra at an early age.

[@xxxblcxxx2549]

I give up

[@ericcheltenham7001]

Honest 😂

[@elliottheplum3963]

I nearly got the second one! I'm only in year nine and it was the scale factor for finding CD.

[@DomVanquish]

Wow, question 3 would be difficult on a Core 2 paper, never mind GCSE.

[@eli5368]

praying that this is higher cause what

[@Charlotte-vj2pg]

THANK YOU SO MUCH!

[@kieranlawrence5807]

Don’t skip out steps makes it really hard to follow, how are we meant to know how you simplify it in your head

[@EasyMathsChannel]

I haven't tried to skip any steps. What don't you understand? and let me try and help you.

[@DkShashaPgAhmad]

I dont undarstand

[@ericcheltenham7001]

Don’t worry, just be happy

[@katerogers4202]

nahhhhh I'll just fail

[@abdulali1309]

That's too hard