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How to prove that 9x^2 + 30x + 28 has no zeroes.........

How to prove that 9x^2 + 30x + 28 has no zeroes.........

Grade:9

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
4 years ago
Hii

this is a quadratic equation whose real roorts will only occur if the discriminant opf the given quadratic is less than zero .

If D is less than zero then the real roots will not exist..In this case 900- 36*28 = -108.

Hence no real root

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