помогите пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(2х+7)/5-1=(х^2+4х)/10, (2х+7-5)/5=(х^2+4х)/10, (2х+2)/5=(х^2+4х)/10, 2×(2х+2)=х^2+4х, 4х+4=х^2+4х, х^2=4, х1=-2, х2=2