> 数学 >
合并同类项:4(x-y)-3(x+y)²+3(x-y)+2(x+y)²
人气:382 ℃ 时间:2019-11-04 08:39:12
解答
4(x-y)-3(x+y)²+3(x-y)+2(x+y)²
=4(x-y)+3(x-y) -3(x+y)²+2(x+y)²
=7(x-y) -(x+y)²
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版