1.(x²-2x)²-2(x²-2x)-3
2.(x²-3)²-x(x²-3)-2x²
1.(x²-2x)²-2(x²-2x)-3
2.(x²-3)²-x(x²-3)-2x²
1.(x²-2x)²-2(x²-2x)-3
这题把(x^2-2x)看做一个整体
=(x^2-2x-3)(x^2-2x+1)
=(x-3)(x+1)(x-1)^2
2.(x²-3)²-x(x²-3)-2x²
=(x^2-3-2x)(x^2-3+x)
=(x-3)(x+1)(x^2+x-3)
1.(x²-2x)²-2(x²-2x)-3
=(x^2-2x-3)(x^2-2x+1)
=(x-3)(x+1)(x-1)^2
2.(x²-3)²-x(x²-3)-2x²
=(x^2-3+x)(x^2-3-2x)
=(x^+x-3)(x-3)(x+1)
1.(x²-2x)²-2(x²-2x)-3
=(x²-2x-3)(x²-2x+1)
=(x-3)(x+1)(x-1)²