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Which quadratic equation has 6 and −2 as its roots?

Answer and explanation

Correct answer: \(x^2-4x-12=0\)

If the roots are 6 and −2, the equation is \((x-6)(x+2)=0\). Expanding it gives \(x^2-4x-12=0\), so option A is correct. Exam tip: the sum of the roots is 4, giving the coefficient −4 for \(x\), and their product is −12.

Related tags

Quadratic EquationsRootsRoots And CoefficientsForming EquationsRoots Of A Quadratic EquationMathematicsClass 10 Mcq

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