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Which equation will have two real and distinct roots?

Answer and explanation

Correct answer: x² − 7x + 10 = 0

For a quadratic equation ax² + bx + c = 0, the discriminant is D = b² − 4ac. For option A, D = (−7)² − 4(1)(10) = 9 > 0, so its roots are real and distinct. In options B and D, D = 0, giving real and equal roots, while option C has D = 16 − 32 = −16, so it has no real roots. Exam tip: D > 0 indicates two real and distinct roots.

Related tags

Quadratic EquationsNature Of RootsDiscriminantDistinct RootsMathematicsClass 10 Mcq

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