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  • Which of the following is not the graph of a quadratic polynomial?

Which of the following is not the graph of a quadratic polynomial?

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Answer.  [D]

Solution.  Polynomial : It is an expression of more than two algebraic terms, especially the sum of several terms that contains different powers of the same variable(s) and a quadratic polynomial is polynomial of degree 2.

If p(x) is quadratic polynomial then there are almost 2 values of x exists called roots.

Hence, the graph of p(x) cuts the x-axis almost 2 times.

But here we see that in option (D) the curve cuts the x-axis at 3 times

Hence, graph (D) is not a graph of a quadratic polynomial.

 

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infoexpert21

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