分解因式:(x²+3x-3)(x²+3x+4)-8.
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分解因式:(x²+3x-3)(x²+3x+4)-8.
分解因式:(x²+3x-3)(x²+3x+4)-8.
分解因式:(x²+3x-3)(x²+3x+4)-8.
(x²+3x-3)(x²+3x+4)-8
=(x²+3x)²+(x²+3x)-12-8
=(x²+3x)²+(x²+3x)-20
=(x²+3x-4)(x²+3x+5)
=(x-1)(x+4)(x²+3x+5)