2012 · Q38
If a/b - b/a = x/y and a/b + b/a = x - y, then what is x equal to?
Elementary MathematicsAlgebra
- A(a+b)/a
- B(a+b)/b
- C(a-b)/a
- DNone of the above
Explanation
Solving gives x = (a^2-b^2)(a^2+b^2)/(ab(a^2-b^2-ab)), which matches none of the listed forms.