(X*X)/XY - X/Y
=(X/X)*(X/Y)-X/Y
=X/Y-X/Y
=0
X平方除以XY 减 X除以Y
X平方除以XY 减 X除以Y
即是 (X*X)/XY - X/Y 计算结果 是等于零吗?
即是 (X*X)/XY - X/Y 计算结果 是等于零吗?
数学人气:934 ℃时间:2020-03-28 20:29:40
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