(4+x)^2=(4+x)(17x+2)

Question

(4+x)^2=(4+x)(17x+2)

Answer 1

(4+x)^2=(4+x)(17x+2),

(4+x)^2-(4+x)(17x+2)=0,

(4+x)(4+x-17x-2)=0,

(4+x)(2-16x)=0,

4+x=0, x_1=-4,

2-16x=0, x_2=1/8.