1.(3x²+2x-8)²-(x²-2x-8)²2.(x+2)(x+3)+x²-43.x²(a-b)+16(b-a)4.(x²+2x)²-7(x²+2x)-85.(x²+9y²)²-36x²y²6.(x-1)(x-2y-1)+y²
1.(3x²+2x-8)²-(x²-2x-8)²
2.(x+2)(x+3)+x²-4
3.x²(a-b)+16(b-a)
4.(x²+2x)²-7(x²+2x)-8
5.(x²+9y²)²-36x²y²
6.(x-1)(x-2y-1)+y²