Q45. The condition for the quadratic expression ax2 + bx + c to be a perfect square trinomial is:Mathematics — Quadratic Equations — Question 45 of 200A. b2 - 4ac = 0B. b2 - 4acC. b2 - 4ac > 0D. a = 0Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →