Question

упростите  выражение 2(x-3)2+12x

Answer 1

(2х-6х)2+12х

4х-12х+12х

-8х+12х= 4х

Answer 2

$2(x-3)^2+12x=2(x^2-6x+9)+12x=2x^2-12x+18+12x=$

$=2x^2+18$