3. Polynomial Division. Additional Maths OCR FSMQ

[@alrightdark]

Theres little to no resources on this exam. You're a life saver

[@shaheerchaudhry9459]

Great video! Found it much less confusing to use the grid methods than Long Division. Thanks!

[@bareaumaths]

Glad it helped! Hope the exam went well.

[@keshwilliams1238]

4:36 "it's all a case of using your common sense" that's when I realised I was going to fail

[@jackyellow8562]

😂

[@makSyak]

Thank you :) your videos are carrying my FSMQ mock tomorrow

[@bareaumaths]

Glad they're helpful. Hope it goes well tomorrow.

[@makSyak]

@@bareaumaths Thank you

[@tJ_0]

If there was a remainder in the answer how would it be shown in this method. Please explain sir

[@bareaumaths]

Let's say you were dividing x^2+5x+10 by x+3. The grid would have X+2 as the quotient, and the bottom right number in the grid would be 6. You wanted 10, so the remainder is 4. It's the same if you wanted to divide 38 by 7. The quotient would be 5, (and this would give 35 as a product), so the remainder would be 3. Does that help?

[@aryanhawaldar6657]

Mr. Bareau, I used the grid method in one of my class tests and because my teacher had not seen it before, I lost marks for my working out. So, for future tests, I fear that the same thing will happen and I won't be awarded the marks. What should I do?

[@bareaumaths]

Hi Aryan. The examination marker would award full marks for any correct method. Please forward my video to your teacher if it helps them. Hope that helps. All the best.

[@Lynx-pj9lb]

@@bareaumaths What if the question states: "using long devision"?

[@bareaumaths]

@@Lynx-pj9lb a very good point. I don't like it, but that has happened. Learn both in case is the safest option.

[@bubblerguysuper2306]

would this be faster than the long division method? Because its essentially the same thing but you also have to draw out an entire grid.

[@bareaumaths]

It's up to you. I like both methods, but some find this easier.

[@bubblerguysuper2306]

@@bareaumaths oh, that makes sense so this is like the safe and sure way, as compared to the long division, where it's easier to make mistakes.

[@samhicks7389]

hi sir, would just writing out the grid be okay for working out marks in the exam?

[@bareaumaths]

Absolutely. (And a mostly successful attempt to fill it in). Good luck with the exam.

[@samhicks7389]

@@bareaumaths thanks sir, your videos have helped me so much

[@bareaumaths]

@@samhicks7389 really glad they've helped.

[@jacobwaldman9993]

Very useful 👍👍 self teaching this textbook

[@bareaumaths]

Glad you're finding the videos useful.

[@jacobwaldman9993]

@@bareaumaths yes they are very useful as I have no help doing it yet

[@H1289-h8o]

same Ive started it in year 11 is it too late as most people at my school started the course in year 10

[@bareaumaths]

@@H1289-h8o Absolutely not too late. I've had people start halfway through year 11! Just work through the videos and practise and you'll be fine.

[@ManasGughanKarthikeyan]

I am a bit confused on how to do this method when there are remainders, and the previous answer you gave was a bit confusing. A bit of help would be great. Thanks so much!

[@bareaumaths]

If this explanation doesn't help, I might need to do an extra video explaining it - let me know: Let's say you were dividing x^2+5x+10 by x+3. The grid would have x+2 as the quotient, and the bottom right number in the grid would be 6 (please try this yourself and see what your grid gives). You wanted 10, so the remainder is 4, as 10 is four more than six. It's the same if you wanted to divide 38 by 7. The quotient would be 5, (and this would give 35 as a product), so the remainder would be 3, as 38 is three more than 35. Does that help?

[@ManasGughanKarthikeyan]

@@bareaumaths Why would the quotient on the grid be x+3 and not x+2? As isnt that what we are dividing by? Sorry if I am just being a bit silly

[@ManasGughanKarthikeyan]

@@bareaumaths Wait! I understand now! Thanks so much. Your videos are extremely helpful, and I love the fact, you are always ready to answer questions! Thank you!

[@bareaumaths]

@@ManasGughanKarthikeyan really glad that's helped. Good luck with the rest of the course!

[@AjGrind]

Would i lose working marks for doing the grid method instead of long division

[@bareaumaths]

Only if the question specifically asked for long division (which it shouldn't, but has happened once).

[@AjGrind]

@@bareaumaths Thank you

[@jackyellow8562]

how would you find f(x) by trial and error?

[@bareaumaths]

Hi - I'm not sure where you would use trial and error here (when dividing a cubic by a linear expression). In video 4 (factor theorem) you can use trial and error to find roots and deduce the factors of a function - is that what you mean?

[@jackyellow8562]

yes that exactly thank you @@bareaumaths