Question

Solve this if 5x-13y=3x-8y then x×x+y×y/x×x-y×y =?

Answer 1

2x=5y
x=5y/2
then
(x^2+y^2) /(x^2-y^2)
put value of x here
(25y^2/4+ y^2) /(25y^2/4-y^2)
(29y^2/4) /21y^2/4
then your answer is 29/21

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OK