Q129. The equation ax2 + bx + c = 0 (a ≠ 0) is provided. What substitution, if any, is needed to express this equation in quadratic form?Mathematics — Quadratic Equations — Question 129 of 200A. y = xB. y = x2C. y = 1/xD. No substitution is neededPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →