1.

Expand: ((x/y)-((y/x))2

Answer»

Given ((x/y)-((y/x))2

According to the identity (a – b)2=a2-2ab+bwe have to expand the given expression,

((x/y)-((y/x))2= (x/y)2-2 (x/y)( y/x)+(y/x)2

((x/y)-((y/x))2= x2/y2-2+y2/x2



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