MCQ PracticeIf a + b = 5 and a - b = 3, then the value of (a 2 + b 2 ) is?Subject: MathematicsTopic: AlgebraA17B18C19D20Correct 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