Question

срочно
12x^2-(4x-3)×(3x+1)=-2

Answer 1

12x^2-(4x-3)(3x+1)=-2
12x^2-(12x^2-9x+4x-3)=-2
12x^2-12x^2+9x-4x+3=-2
5x+3=-2
5x=-2-3
5x=-5
x=-5:5
x=-1
отвте: -1