> 数学 >
(3a+1/2b)(3a-1/2b)(9a方-1/4b方)
人气:418 ℃ 时间:2020-01-06 20:11:38
解答
(3a+b/2)(3a-b/2)(9a^2-b^2/4)
=(9a^2-b^2/4)(9a^2-b^2/4)
=(9a^2-b^2/4)^2
=81a^4-9a^2b^2/2+b^4/16
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版