Choose the correct answer. One of the roots of equation x² + mx - 5 = 0 is 2; find m. (A) −2 (B) -1/2 (C) 1/2 (D) 2

Answer: (C) 1/2 Put x = 2 : 4 + 2m - 5 = 0 , so 2m = 1 and m = 1/2 .

One of the roots of equation x^2 + mx - 5 = 0 is 2; find m.

Choose the correct answer.

One of the roots of equation x^2 + mx - 5 = 0 is 2; find m.

(A) −2 (B) \(-\frac{1}{2}\) (C) \(\frac{1}{2}\) (D) 2

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

Answer: (C) \(\frac{1}{2}\)

Put \(x = 2\): \(4 + 2m - 5 = 0\), so \(2m = 1\) and \(m = \frac{1}{2}\).

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

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