> 数学 >
1/(6X-4Y)-1/(6X+4Y)+3X/(4Y^2-9X^2)=
人气:477 ℃ 时间:2020-04-13 12:33:13
解答
(6X+4Y)/(36X2-16Y2)-(6X-4Y)/(36X2-16Y2)=2Y/(9X2-4Y2)
再+3X/(4Y^2-9X^2)
=(2Y-3X)/(4Y^2-9X^2)=2Y+3X
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版