#is my factorization of quadratic -> difference in squares correct?

61 messages · Page 1 of 1 (latest)

iron cave
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This is a problem I made myself btw. I just wanted to make sure I understood the gist of it

toxic iceBOT
minor tree
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just develop the 3 factors on the right and see if you find the same thing as the 2 terms on the left

iron cave
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Okok gotcha

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i think im in the wrong because of the last term. I checked out a video and of a guy trying to factor out one of the 9s in a simpler problem he'd made

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but only one of the 9's because he said or else it would complicate things and create too many numbers

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but now this is exactly whats happening

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and i wasnt able to factor out the ^3

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I wonder if the solution would be to get rid of my 3 exponents and 7 coefficient on my last term

minor tree
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wait x varies and y is fixed?

iron cave
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oh wait oops

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no wait nvm i didnt leave anything out

minor tree
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you got the right answer?

iron cave
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nonnono

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so

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on the last ones

minor tree
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I think you can verify it with wolframalpha

iron cave
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oh is that a website?

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I was going to say also, x^2 extends to (x)(x) but y^3 cannot extend to (y)(y)

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that's why some are factored some are not

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but ill try to google it!

minor tree
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really useful when you're doing maths

iron cave
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OH WAIT

minor tree
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?

iron cave
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srry i used chatgpt cuz i didnt understand how to use the website :') it wasnt giving it to me in difference in square form

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it's basically what i wrote write, if they do a ^2 on the parenthesis?

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oh wait no its not

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they both have squares

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nvm nvm

minor tree
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yes it's much easier if you use a^2-b^2=(a-b)(a+b)

iron cave
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hmm yeah

minor tree
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you understand why?

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it's just faster

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than trying to find complicated relations btw the terms

iron cave
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thing is, I'm factoring the 27 twice -> 9 -> 3. What chat gbt is saying too is the same for x in the second parenthesis.

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Is that alright i guess?

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Cuz in my head it would be (7x^3y^2)^2 - (9x^2y^3)^2 instead

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where is the "factoring out" of the 9 and x you know

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(7x^3y^2)^2 - (9x^2y^3)^2 in this one we know that it has a ^2 we can just cancel, making it (7x^3y^2) - (9x^2y^3). I think?

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Or wait, when factoring the 27: is it just -> 3 (factoring it once, since 3x9 is 27. idk in my head it was 9)

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then what of x tho?

marsh sky
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I believe you're being mislead by the chatgpt response as 3² isn't 27. This is probably because it's trying to find a factorisation where there isn't one as this is already the base form

iron cave
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oohhh

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so 27 cant be factorized

marsh sky
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It looks close but 49 is 7² and 27 3³ so it doesn't quite add up

iron cave
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ohhhh

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ill change things up

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thank you!

marsh sky
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Happy to help

iron cave
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Yeah chatgpt just sucks for me when it comes to math. Everything makes sense apart from the x to the first power: how does it go from x^4 -> x^1

iron cave
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lol yeah

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im starting to understand that

plain lantern
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it's good at yapping, that's all 😄

iron cave
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hahahaha

marsh sky
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You're right though, it should say x² after all the eights otherwise it's correct

iron cave
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btw I'm looking at wolf/alpha website, an alternative form it suggests is x^4 y^4 (7 x - 8 y) (7 x + 8 y). Would this be a correct form of a square difference pattern or are we just simply factoring out a polynomial here?

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damn im complicating it for myself

marsh sky
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No problem