Question

8(x-10)2-11(x+5)2 =-3x2-170x+1600

Answer 1

(8х-80)2-(11х+55)2=-3х-170х+160
(8х-80-11х+55)2+3х+170х-160=0
(-3х-25)2+173х-160=0
-6х-50+173х-160=0
167х-190=0
167х=190
Х=190:167
Х=1,14