问题标题:
【4x³-4x²y-﹙x-y)4x³-4x²y-﹙x-y)】
问题描述:
4x³-4x²y-﹙x-y)
4x³-4x²y-﹙x-y)
付歌回答:
4x³-4x²y-﹙x-y)
=4x²(x-y)-(x-y)
=(4x²-1)(x-y)
=(2x+1)(2x-1)(x-y)
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