> 数学 >
(3分之1x+y0(3分之x-y)(9分之1x^2+y^2)
(3分之1x+y)(3分之x-y)(9分之1x^2+y^2)
人气:354 ℃ 时间:2020-04-01 11:00:18
解答
(3分之1x+y)(3分之x-y)(9分之1x^2+y^2)
=(9分之x²-y²)(9分之1x^2+y^2)
=(x^4-y^4)/81
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版