> 数学 >
因式分解 x²+2xy-x-y+y²-2
人气:260 ℃ 时间:2020-05-10 12:07:56
解答
x²+2xy-x-y+y²-2
=(x²+2xy+y²)-(x+y)-2
=(x+y)²-(x+y)-2
=(x+y-2)(x+y+1)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版