2(x2+4)2+17 (x2+4x)+36=0

Question

2(x2+4)2+17 (x2+4x)+36=0

Answer 1

(2х2+8)2+17х2+68х+36=0
4х2+16+17х2+68х+36=0
21х2+68х+52=0
Д=256 
х1=-68-16/42=-2
х2=-68+16/42=-52/42