Question

(x+3)*2-x=(x-2)(2+x)

Answer 1

2x+6-x²-3x=(x-2)(x+2)
-x²-x+6=x²-4
x²+x²+x-4-6=0
2x²+x-10=0
D=1+80=81=9²
x1=-1+9/4=8/4=2
x2=-1-9/4=-10/4=-2.5