MCQ PracticeIf x + y + z = 0, then what is the value of fracxy + yz + zxx^2 + y^2 + z^2?Subject: MathematicsTopic: AlgebraA1B-1C(1)/(2)D- (1)/(2)Correct Answer: DPractice 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