x^3-3x-2化简结果是(x+1)^2*(x-2)

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x^3-3x-2化简结果是(x+1)^2*(x-2)x^3-3x-2化简结果是(x+1)^2*(x-2)x^3-3x-2化简结果是(x+1)^2*(x-2)解x³-3x-2=x³-

x^3-3x-2化简结果是(x+1)^2*(x-2)
x^3-3x-2化简
结果是(x+1)^2*(x-2)

x^3-3x-2化简结果是(x+1)^2*(x-2)

x³-3x-2
=x³-x-2x-2
=x(x²-1)-2(x+1)
=x(x-1)(x+1)-2(x+1)
=(x+1)[x(x-1)-2]
=(x+1)(x²-x-2)
=(x+1)(x-2)(x+1)
=(x+1)²(x-2)