> 数学 >
(x-2y)(x方-2xy+4y方)=?
人气:292 ℃ 时间:2020-05-01 15:24:18
解答
(x-2y)(x方-2xy+4y方)
=x³-2x²y+4xy²-2x²y+4xy²-8y³
=x³-4x²y+8xy²-8y³
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版