(x^-2x)(x^2-2x-2)-3
=（x²-2x）²-2（x²-2x）-3
=(x²-2x+1)(x²-2x-3)
=(x+1)²(x-3)(x+1)
=(x+1)³(x-3)
将下列格式分解因式:(x^-2x)(x^2-2x-2)-3十字乘法
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(x^-2x)(x^2-2x-2)-3
=（x²-2x）²-2（x²-2x）-3
=(x²-2x+1)(x²-2x-3)
=(x+1)²(x-3)(x+1)
=(x+1)³(x-3)