Q.3 (B)(ii) Solve the following quadratic equation by using formula method : \(x^2 - 2x - 3 = 0\)

Doubtly Asked 24 Oct 2026 ssc 10th Save WhatsApp Report

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Answer: x = 3 or x = –1

a = 1, b = –2, c = –3.

\(b^2 - 4ac = 4 + 12 = 16\).

\(x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \dfrac{2 \pm 4}{2}\)

\(x = \dfrac{6}{2} = 3\) or \(x = \dfrac{-2}{2} = -1\).

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

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