Question

What would be the best first step to solve this
(4x-9x)(12+8x)=9(4x)

Answer 1

open the brackets is the first step

Explanation:

4x(12 + 8x) -9x( 12+8x) = 36x

48x + 32x^2 -108x -72x^2 =36x

32x^2 - 72^2 + 48x - 36x - 108x = 0

-40x^2 -96x = 0

find x using quadratic formular