Question

(x^2+4x)*3-2x(x+2)
помогите

Answer 1

$3x^2+12x+(-2x^2-4x)$

$x^2+8x$

Answer 2

(х^2+4х)×3-2х (х+2)=0
3х^2+12х-2х^2-4х=0
3х^2-2х^2+12х-4х=0
х^2+8х=0
х (х+8)=0
х=0 , х+8=0
х=-8