x的4次方+x³-7x²-x+6
=(x的4次方+x³)-(7x²+7x)+(6x+6)
=x³(x+1)-7x(x+1)+6(x+1)
=(x+1)(x³-7x+6)
=(x+1)[(x³-x²)+(x²-x)-(6x-6)]
=(x+1)[x²(x-1)+x(x-1)-6(x-1)]
=(x+1)(x-1)(x²+x-6)
=(x+1)(x-1)(x+3)(x-2)
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x的4次方+x³-7x²-x+6
=(x的4次方+x³)-(7x²+7x)+(6x+6)
=x³(x+1)-7x(x+1)+6(x+1)
=(x+1)(x³-7x+6)
=(x+1)[(x³-x²)+(x²-x)-(6x-6)]
=(x+1)[x²(x-1)+x(x-1)-6(x-1)]
=(x+1)(x-1)(x²+x-6)
=(x+1)(x-1)(x+3)(x-2)
很高兴为您解答,【学习宝典】团队为您答题.
请点击下面的【选为满意回答】按钮.