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If all the coefficients of a quadratic equation are integers and its discriminant (D) is 5, what can be concluded about its roots?

Answer and explanation

Correct answer: The roots are real, irrational, and distinct

For a quadratic equation, D > 0 means the roots are real and distinct. Here D = 5, so the roots are real and distinct. The roots are given by (-b ± √D)/(2a); since √5 is irrational and a and b are integers with a ≠ 0, both roots are irrational. Therefore, option A is correct.

Related tags

Quadratic EquationsDiscriminantNature Of RootsMathematicsClass 10 Mcq

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