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MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

Solve 2x2−7x−4=02x^{2}-7x-4=0. (a) x=−4 or x=12x=-4\text{ or }x=\dfrac{1}{2} (b) x=8 or x=−1x=8\text{ or }x=-1 (c) x=−12 or x=4x=-\dfrac{1}{2}\text{ or }x=4 (d) x=7+174 or x=7−174x=\dfrac{7+\sqrt{17}}{4}\text{ or }x=\dfrac{7-\sqrt{17}}{4}

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