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+---- Thread: A little help Fearless? Maths (/showthread.php?tid=12626)
A little help Fearless? Maths - Adman - 04-23-2012
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
RE: A little help Fearless? Maths - Boosted - 04-23-2012
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.
RE: A little help Fearless? Maths - s.J. - 04-23-2012
(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.
RE: A little help Fearless? Maths - Adman - 04-23-2012
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
RE: A little help Fearless? Maths - s.J. - 04-23-2012
yea my bad on the -3y there wasn't paying too much attention to the issue.
RE: A little help Fearless? Maths - PrivateToast - 04-23-2012
[Image: maths.png]
RE: A little help Fearless? Maths - s.J. - 04-25-2012
(04-23-2012, 08:37 PM)PrivateToast Wrote: [Image: maths.png]
I don't think that's what factorize means lol.
RE: A little help Fearless? Maths - StillAlive - 04-25-2012
This should help you.