7. If42(xy # 0), then find the value ofxs_y3.-1 – InterviewSolution

1.	7. If42(xy # 0), then find the value ofxs_y3.-1
Answer» (x/y)+(y/x)=-1Take LCMx^2+y^2=-xyx^2+y^2+xy=0Now, x^3-y^3=(x-y)(x^2+y^2+xy)=(x-y)(0)=0

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