12х^2-(4х-3)*(3х+1)=-2

Question

12х^2-(4х-3)*(3х+1)=-2

Answer 1

12x^2-(4x-3)*(3x+1)=-2
12x^2-(12x^2+4x-9x-3)=-2
12х^2-12х^2-4х+9х+3=-2
5x+3=-2
5x=-2-3=-5
x=-1

Comments

спасибо