MCQ PracticeIf x = sqrt(a) + (1)/(sqrt(a)), y = sqrt(a) - (1)/(sqrt(a)), (a > 0) then the value of x 4 + y 4 - 2x 2 y 2 is?Subject: MathematicsTopic: AlgebraA16B20C10D5Correct Answer: APractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the