-2(x-1)-3(1-2x)-2(x²-1)
=(-2x+2)-(3-6x)-(2x²-2)
=-2x+2-3+6x-2x²+2
=-2x²+4x+1
2(x-1/2y)-3(x-y)
=(2x-y)-(3x-3y)
=2x-y-2x+3y
=2y
-2(x-1)-3(1-2x)-2(x²-1)
=(-2x+2)-(3-6x)-(2x²-2)
=-2x+2-3+6x-2x²+2
=-2x²+4x+1
2(x-1/2y)-3(x-y)
=(2x-y)-(3x-3y)
=2x-y-2x+3y
=2y