If (x/y)=(10/5), find the value (x^2+y^2)/(x^2-y^2)
Choose the correct choice from the following:	A) 5/3	B) 59/11	C) 51/77	D) 41/11	E) None of them
= (x^2+y^2)/(x^2-y^2) = ( x^2 /y^2+ 1)/ ( x^2 /y^2-1) = [(10/5)^2+1] / [(10/5)^2-1]   = [(100/25)+1] / [(100/25)-1] = 5/3   5/3nswer is 5/3.
<result>A</result>
If (x/y)=(10/5), find the value (x^2+y^2)/(x^2-y^2)