> 数学 >
x²-2xy+y²+2x-2y-8
人气:273 ℃ 时间:2020-09-13 16:51:16
解答
x²-2xy+y²+2x-2y-8
=(x-y)²+2(x-y)-8
=(x-y+4)(x-y-2)
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版