> 数学 >
xy²+2xy-3x-y²+2y-1因式分解
人气:137 ℃ 时间:2019-07-22 14:25:46
解答
xy²+2xy-3x-y²+2y-1
=x(y²+2y-3)-(y²-2y+1)
=x(y+3)(y-1)-(y-1)²
=(y-1)[x(y+3)-(y-1)]
=(y-1)(xy+3x-y+1)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版