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Discriminant

Which are of ...

Question

Which are of the following is standard form of a quadratic equation

are real

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are real

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are real

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are real

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Solution

The correct option is B
are real

For $a x^{2} + b x + c = 0$ to be a quadratic equation, $a \neq 0; a, b, c$ are real

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a x^{2} + b x + c = 0

α (x - β)^{2} + β (x - α)^{2} = 0

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p x^{2} + q x + r = 0

The quadratic equation whose roots are real and equal is:

\frac{3}{5} x^{2} - \frac{3}{5} x + 1

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