(2х+4)(3х-1)-(6х-12)(х+3)=100

Question

(2х+4)(3х-1)-(6х-12)(х+3)=100

Answer 1

6x^2 - 2x + 12x - 4 - (6x^2 + 18x - 12x - 36) = 100
10x - 4 - 18x + 12x + 36 = 100
4x +32 = 100
4x = 132
x = 132/4
x = 33

Comments

Большое спасибо)))

Answer 2

6x^+12x-2x-6x^+12x-18x+36=100
6x^-6x^+12x-2x+12x-18x=100-36
4x=64
x=14