Solve the equation .

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Solve the equation x2+3x−18=2x2−7x−6x^{2}+3x-18=2x^{2}-7x-6. (a) x=6 or x=4x=6\text{ or }x=4 (b) x=5+13 or x=5−13x=5+\sqrt{13}\text{ or }x=5-\sqrt{13} (c) x=3 or x=−6x=3\text{ or }x=-6 (d) x=4 or x=3x=4\text{ or }x=3

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