问题 填空题

分解因式:(x+1)(x+2)(x+3)-6×7×8=______.

答案

(x+1)(x+2)(x+3)-6×7×8

=x3+6x2+11x+6-336

=x3+6x2+11x-330

=x3-5x2+11x2-55x+66x-330

=x2(x-5)+11x(x-5)+66(x-5)

=(x-5)(x2+11x+66).

故答案为(x-5)(x2+11x+66).

解答题
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