|x^2+4x-5|=6-2x
(1)6-2x≥0 x≤3
x^2+4x-5=6-2x
x^2+6x-11=0
x=（-6±√80）/2
x=-3±2√5
(2)-x^2-4x+5=6-2x
x^2+4x-5=2x-6
x^2+2x+1=0
(x+1)^2=0
x=-1
综上x=-3±2√5或x=-1