Explain why the roots of a quadratic equation are complex if the value of the discriminant is less than 0.

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Britney Vaughn

Mathematics

3 August, 01:58

Explain why the roots of a quadratic equation are complex if the value of the discriminant is less than 0.

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Ahmed Newton · Answer 1

Discriminant b²-4ac is under the radical in the quadratic formula.

If b²-4ac is negative, you can't get real roots because under root of a negative value is not real

radical, under root and square root are the same thing here