作业帮√X/Y+Y/X+2-√X/Y-√Y/X(注√X/Y+Y/X+2在一个根号2中)
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√X/Y+Y/X+2-√X/Y-√Y/X(注√X/Y+Y/X+2在一个根号2中)
√X/Y+Y/X+2-√X/Y-√Y/X(注√X/Y+Y/X+2在一个根号2中)
√X/Y+Y/X+2-√X/Y-√Y/X(注√X/Y+Y/X+2在一个根号2中)
√(X/Y+Y/X+2)-√(X/Y)-√(Y/X)对吗?
=√[(X²+Y²+2XY)/(XY)]-√[Y²/(XY)]-√[X²/(XY)]
=(X+Y)/√(XY)-Y/√(XY)-X/√(XY)
=(X+Y-Y-X)/√(XY)
=0
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√X/Y+Y/X+2-√X/Y-√Y/X(注√X/Y+Y/X+2在一个根号2中)
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