Which among the following is a quadratic polynomial?

x^{2} + 5 x - 14

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x^{3} - 4 x^{2}

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3 x^{4} - 4 x

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3 x - 4

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Solution

The correct option is A $x^{2} + 5 x - 14$
A qudratic polynomial is a polynomial of degree 2. In the given options, only $x^{2} + 5 x - 14$ has a degree of 2. Hence, it is a qudratic polynomial.

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5 x^{2} - 4 x - 7 = 0

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