(x^2-2x)(x^2-2x-2)-3 因式分解
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(x^2-2x)(x^2-2x-2)-3 因式分解
(x^2-2x)(x^2-2x-2)-3 因式分解
(x^2-2x)(x^2-2x-2)-3 因式分解
令a=x²-2x
原式=a(a-2)-3
=a²-2a-3
=(a-3)(a+1)
=(x²-2x-3)(x²-2x+1)
=(x-3)(x+1)(x-1)²
(x² - 2x)(x² -2x - 2) - 3
= (x² - 2x)² - 2(x² - 2x) - 3
= (x² - 2x + 1)(x² - 2x - 3)
= (x - 1)²(x + 1)(x - 3)
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