Prove that 9x×x+30x+28 has no 0
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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
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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