C-05-Q068mediumsingle_mcqSolve abx+bax=a2−b2ab\dfrac{a}{b}x + \dfrac{b}{a}x = \dfrac{a^2 - b^2}{ab}bax+abx=aba2−b2:aa2−b2a2+b2\dfrac{a^2 - b^2}{a^2 + b^2}a2+b2a