> 数学 >
(x^2+y^2)-x^2y^2=?
人气:451 ℃ 时间:2020-02-04 12:55:38
解答
(x²+y²)-x²y²
=x²+y²+2x²y²-3x²y²
=(x+y)²-3x²y²
=(x+y+√3xy)(x+y-√3xy)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版