x^2+8x+16-x^2+2x-x+2-2x+3=0
7x+21=0
7x=-21
x=-3
(х+4)^2-(х+1)(х-2)=2х-3
x^2+8x+16-x^2+x+2-2x+3=0
9x+16+2-2x+3=0
7x+18+3=0
x=-21/7
x^2+8x+16-x^2+2x-x+2-2x+3=0
7x+21=0
7x=-21
x=-3
(х+4)^2-(х+1)(х-2)=2х-3
x^2+8x+16-x^2+x+2-2x+3=0
9x+16+2-2x+3=0
7x+18+3=0
7x+21=0
x=-21/7
x=-3