Question

(х-2)(х+1)-(х-1)(х+2)+0.2=0

Answer 1

(x-2)(x+1)-(x-1)(x+2)+0.2=0
x^2+x-2x-2-x^2-x-2+0.2=0
-2x-3.8=0
-2x=3.8
x=3.8/(-2)
x=-1.9