Question

how do you factor 4x^2-12x+9

Answer 1

hint: its a perfect square

Answer 2

split -12x as -6x-6x

Answer 3

then take 2x common from 1st 2 terms and -3 common from last 2 terms

Answer 4

find factors of coefficients of x^2 and constant term such that its factors sum up to -12.
4*9
36*1
6*6

we know that -6+(-6) will result in -12.
so,
4x^2-12x+9 = 4x^2-6x-6x+9
taking common, by grouping into 2 terms.
= 2x(2x-3)-3(2x-3)
= (2x-3)(2x-3)

Answer 5

thanks

Answer 6

it helped

Answer 7

obviously, it helps when the entire solution is right in front of your eyes.....try solving it on your own...