(X+3)3-(x+3)2*x+3(x+3)=0

Question

(X+3)3-(x+3)2*x+3(x+3)=0

Answer 1

-
В ответе получается -45

Answer 2

3х+9-2х²+6х+3х+9=0
-2х²+12х+18=0. |: (-2)
х²-6х-3=0