> 数学 >
比较这两者大小要过程.X(X-Y)与Y(X-Y)(X≠Y)
人气:379 ℃ 时间:2020-05-14 20:02:03
解答
X(X-Y)-Y(X-Y)=x^2-2xy+y^2=(x-y)^2>0,因(X≠Y),所以X(X-Y)大于Y(X-Y)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版