Х^2(х^2+4х+4)=(5х)^2+100х+100

Question

Х^2(х^2+4х+4)=(5х)^2+100х+100

Answer 1

Х^2(х^2+4х+4)=(5х)^2+100+100
х^2(х+2)^2=(5x+10)^2
x^2(x+2)^2=25(x+2)^2
x^2=25
x=5
х= -5