1.(2a-b)²+8ab2.y²-2y-x²+13.x²-xy+yz-xz4.6x²+5x-45.2a²-7ab+6b²6.(x²-2x)²+2(x²-2x)+17.(x²-2x)²-14(x²-2x)-15 8.x²(x-y)+(y-x)9.169(a+b...