2x²+xy-y²-4x+5y-6分解因式怎么做啊?把方法也说一下.
人气：336 ℃ 时间：2019-10-11 19:20:12
解答
=(x+y) x (2x-y) - (4x-5y) - 6 =(x+y-3) x (2x-y+2)
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