Q23. If the general second-degree equation ax2 + 2hxy + by2 + 2gx + 2fy + c = 0 represents a circle, what are the necessary conditions?Mathematics — Conic Sections — Question 23 of 272A. a = b and c = 0B. f = g and h = 0C. a = b and h = 0D. f = g and c = 0Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →