The quadratic equation contains only powers of x that are non-negative integers, and therefore it is a polynomial equation. In particular, it is a second-degree polynomial equation, since the greatest power is two.
Polynomial function whose general form is f(x)=Ax2+Bx+C, where A ≠ 0 and A, B, C ∈ R. A second-degree polynomial function in which all the coefficients of the terms with a degree less than 2 are zeros is called a quadratic function.
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Quadratic equation
The quadratic equation contains only powers of x that are non-negative integers, and therefore it is a polynomial equation. In particular, it is a second-degree polynomial equation, since the greatest power is two.
Polynomial function whose general form is f(x)=Ax2+Bx+C, where A ≠ 0 and A, B, C ∈ R. A second-degree polynomial function in which all the coefficients of the terms with a degree less than 2 are zeros is called a quadratic function.