(X-Y)^5÷(Y-X)^3急求!
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(X-Y)^5÷(Y-X)^3急求!
(X-Y)^5÷(Y-X)^3急求!
(X-Y)^5÷(Y-X)^3急求!
(X-Y)^5÷(Y-X)^3
=(X-Y)^5÷[-(X-Y)^3]
=-(X-Y)^(5-3)
=-(X-Y)^2
(X-Y)^5÷(Y-X)^3
= (X-Y)^5÷{-(X-Y)}^3
= -(X-Y)^5÷(X-Y)^3
=-(X-Y)^2
=-X^2+2XY-Y^2
-(x-y)^2
-(X-Y)^2
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