Question

решете уравнение
(x-4)(x+3)+(x+3)(x-2)=0

Answer 1

(x-4)(x+3)+(x+3)(x-2)=0
X^2-4x+3x-12+x^2-2x+3x-6=0
2x^2-18=0
2x^2=18|:2
X^2=9
X=3