Can someone please explain factoring quadratic equations?

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Long division? No, that is a route to madness as it's never needed even at A level

Polynomial long division is in the OCR A, OCR B MEI, Edexcel and AQA Mathematics Advanced Level specifications - please get your facts checked before you provide information on here.

Reply 61

sdfj

Original post by Muttley79

You misquote me - where did I say it wasn/t on the spec and we are discussing GCSE factorising wherer it certiainly isn't.
I said it wasn't needed - every question can be done without using it! Post a question requiring it please?

'It's never needed even at A Level'

I have got questions last year that were from MEI past papers as extensions that required the use of polynomial long division to factorise cubics, so using factor theorem as working wouldn't work.

An example: Use long division to find the quotient and the remainder when x³+3x²+5x-3 is divided by x + 1. Pretty simple either way. Answer in case you need it: x² + 2x + 3 and remainder of -6

Reply 62

EeveeSAMA

Original post by sdfj

'It's never needed even at A Level'
I have got questions last year that were from MEI past papers as extensions that required the use of polynomial long division to factorise cubics, so using factor theorem as working wouldn't work.
An example: Use long division to find the quotient and the remainder when x³+3x²+5x-3 is divided by x + 1. Pretty simple either way. Answer in case you need it: x² + 2x + 3 and remainder of -6

I'm just confused at this point, I have no idea what anyone is talking about i know I say I'll leave but it makes me really sad people are still arguing.

Reply 63

Muttley79

Original post by sdfj

'It's never needed even at A Level'
I have got questions last year that were from MEI past papers as extensions that required the use of polynomial long division to factorise cubics, so using factor theorem as working wouldn't work.
An example: Use long division to find the quotient and the remainder when x³+3x²+5x-3 is divided by x + 1. Pretty simple either way. Answer in case you need it: x² + 2x + 3 and remainder of -6

Show me the paper that question is on - they cannot specifiy a method like that since the new spec.

Reply 64

Muttley79

Original post by EeveeSAMA

I'm just confused at this point, I have no idea what anyone is talking about i know I say I'll leave but it makes me really sad people are still arguing.

It's a discussion ... not an argument

Reply 65

Mr_Pizza

Original post by EeveeSAMA

I'm just confused at this point, I have no idea what anyone is talking about i know I say I'll leave but it makes me really sad people are still arguing.

Your comment is the one that renders me addled... all I see is but discussion, not a hint of arguement.

Reply 66

EeveeSAMA

Original post by Mr_Pizza

Your comment is the one that renders me addled... all I see is but discussion, not a hint of arguement.

I tend to do that to people. Anyway bye.

Reply 67

sdfj

Original post by Muttley79

Show me the paper that question is on - they cannot specifiy a method like that since the new spec.

Have a look at the OCR MEI specification before harassing me about it. Get you're facts straight - you're a teacher.

Reply 68

Tryingtohelpout

LOL I just read through this thread wondering why there are 74 posts about quadratics. So amusing to see 😂 Some people can't give it up. I'm very sorry @Mr_Pizza @EeveeSAMA @sdfj

Reply 69

Mr_Pizza

Original post by Tryingtohelpout

LOL I just read through this thread wondering why there are 74 posts about quadratics. So amusing to see 😂 Some people can't give it up. I'm very sorry @Mr_Pizza @EeveeSAMA @sdfj
@EeveeSAMA, there's better parts to this site than Muttley and toxic arguments so I encourage you not to leave the site entirely. Report, don't engage, move in.

Please don't read if you think you'll get offended

Interesting... one of my posts here got declined? I didn't do anything wrong!

Reply 70

Admit-One

Universities Forum Helper

Don’t forget to make use of the block list for accounts you find consistently unhelpful.

Reply 71

sdfj

Original post by Admit-One

Don’t forget to make use of the block list for accounts you find consistently unhelpful.

Ok thanks - I'll do that now

Reply 72

Mr_Pizza

Original post by EeveeSAMA

I reported them saying they are angering people to making them leave (for urgency) so they actually do something.

I advise against this. Just move on, they're a frank & thorough teacher, someone who is supposed to be there to support you. It's best not to take action in the digital world against those who are lightly being hollow to you, in your times of desperate need. I re-read the whole post, and I find almost nothing wrong with it. He was simply trying to state things, which I can see might not please you, but the perspective was a completely different angle.
(Note: This message is to all and is to invoke not to create any conflict in any form, it only devolves.)

(edited 1 week ago)

Reply 73

Muttley79

Original post by sdfj

Have a look at the OCR MEI specification before harassing me about it. Get you're facts straight - you're a teacher.

Again, where did I say it wasn't on the spec but you NEVER need to use the method. You can use grid method instead to get the answer - this has been run past the exam board btw.

Find an exam question that insists on long division set since 2017

Reply 74

sdfj

Original post by Muttley79

Again, where did I say it wasn't on the spec but you NEVER need to use the method. You can use grid method instead to get the answer - this has been run past the exam board btw.
Find an exam question that insists on long division set since 2017

The question specifically asks for long division to be used - seen in the mark scheme too.

That question was in OCR and since 2017

Reply 75

Muttley79

Original post by sdfj

The question specifically asks for long division to be used - seen in the mark scheme too.
That question was in OCR and since 2017

Which paper? I teach Edexcel btw and all boards agreed not to do this.

Reply 76

sdfj

Original post by Muttley79

Which paper? I teach Edexcel btw and all boards agreed not to do this.

I found the question - it was actually a 2023 OCR FSMQ paper question. Mistook it for another question from MEI then.

Reply 77

Muttley79

Original post by sdfj

I found the question - it was actually a 2023 OCR FSMQ paper question. Mistook it for another question from MEI then.

So not an A level paper ... so I was correct -

Reply 78

sdfj

Original post by Muttley79

So not an A level paper ... so I was correct -

Still on the specification - so I was correct

Reply 79

Muttley79

Original post by sdfj

Still on the specification - so I was correct

I never said it wasn't on the spec - point to the post where I said that? I said it wasn't needed which it isn't - of course I teach it but show the better approaches e.g. grid method.