> 数学 >
若X^2-Y^2=24,X+Y=6,求(X-Y)^2的值
人气:169 ℃ 时间:2020-06-27 07:15:19
解答
X^2-Y^2=24,
X+Y=6
x^2-y^2=24
(x+y)(x-y)=24
6(x-y)=24
(x-y)=4
(x-y)^2
=4^2
=16
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版