A little help Fearless? Maths

[Adman]

Ok so today I was taking my Yr 10 exams and had to sit my maths non-calculator paper. This was one of the questions.

16.

d. Factorise:

(x+y)^2-3(x+y)


I couldn't for the life of me figure it out, it was the only question I struggled on. If you think you know how to do it please let me know.

P.S I don't know how differently mathematics is taught in other countries.
P.S.S I have already sat the test so I'm not cheating

Adam

[Boosted]

I did my Year 9 Maths test today for non-calculator, but I'm not very good at maths myself and don't know what that means either sorry.

[s.J.]

(x+y)²-3(x+y) = x²+2xy+y²-3x+3y

I dunno what factorise means but I just made this shit simpler if that's what you needed, looks like the only thing you can do without knowing what this equation equals.

[Adman]

Yh, that is pretty much what I got although if you multiply out the second bracket, wouldn't that give -3y? Anyway, generally factorising is used either in quadratic equations such as x^2+6x+8=0 would factorise to (x+2)(x+4) and also if the question was 'factorise completely':

6a^2p+9ap then that would be 3ap(2a+3)

However for this question I didn't really see what to do. Thanks for your help,

Adam

[s.J.]

yea my bad on the -3y there wasn't paying too much attention to the issue.

[PrivateToast]

[Image: maths.png]

[s.J.]

[Image: maths.png]

I don't think that's what factorize means lol.

[StillAlive]

This should help you.