Question

factorise 3(x+2)^2-10(x+2)+3

help me pleasee :)

Answer 1

simply take (x+2) as A

Answer 2

then you will get a quadratic in A which you can easily solve,i presume???

Answer 3

Assume (x+2) = t.

then solve for t

then substitute t=x+2 and get x!!

Answer 4

or if you prefer the longer method, open brackets the whole term to a new quadratic in 'x'. then factorise.
But the former was a cleverer method.

Answer 5

3A^2- 10 A +3
3A^2 - 9 A -A +3
3A(A-3) - 1(A-3)
(3A-1)(A-3)
substitute the value of A and
PRESTO!!!!
you have got your value of X

Answer 6

PRESTOOOO!!!! ALAKAZAAAM!!!

Answer 7

LOL

Answer 8

thanks guys! :)

Answer 9

First expand to get
\[3 x^2+2 x-5
\]
Then factor
\[
(x-1) (3 x+5)
\]