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(x²;+x)(x²;+x-14)+24=0 (x²;+x)²;-14(x²;+x)+24=0 (x²;+x-2)(x²;+x-12)=0 (x-1)(x+2)(x-3)(x+4)=0 所以x=1或x=-2或x=3或x=-4 如果不懂,祝學習愉快!
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