(х-4)(х+3) +(х-2)(х+3)=0

Question

(х-4)(х+3) +(х-2)(х+3)=0

Answer 1

(х-4)(х+3)+(х-2)(х+3)=0
х^2+3х-4х-12+х^2+3х-2х-6=0
2х^2-18=0 | :2
х^2-9=0
х^2=9
х=3 и х=-3
Ответ: х=-3, 3

Answer 2

2х^2-6х+6х-18=0
2х^2=18
х^2=9
х1=3
х2=-3