Choose the correct answer. Which one is the quadratic equation ? (A) 5/x - 3 = x² (B) x(x + 5) = 2 (C) n - 1 = 2n (D) 1/x²(x + 2) = x

Which one is the quadratic equation ?

Choose the correct answer.

Which one is the quadratic equation ?

(A) \(\frac{5}{x} - 3 = x^2\) (B) \(x(x + 5) = 2\) (C) \(n - 1 = 2n\) (D) \(\frac{1}{x^2}(x + 2) = x\)

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

Answer: (B) \(x(x + 5) = 2\)

\(x(x + 5) = 2\) gives \(x^2 + 5x - 2 = 0\), a quadratic. (A) and (D) become cubic equations after clearing denominators, and (C) is linear.

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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