Which of the following is a quadratic function?
a. f(x) = 2 - x²
b. f(x) = x - 2
c. f(x) = 3
d. f(x) = x³ - 2x + 1
a. f(x) = 2 - x²
b. f(x) = x - 2
c. f(x) = 3
d. f(x) = x³ - 2x + 1
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In algebra, a quadratic function, a quadratic polynomial,a polynomial of degree 2, or simply a quadratic, is apolynomial function with one or more variables in whichthe highest-degree term is of the second degree.
EXPLANATION:
A quadratic function is one of the form f(x) = ax2
+ bx + c , where a, b, and c are numbers with a
not equal to zero. The graph of a quadratic
function is a curve called a parabola. Parabolas
may open upward or downward and vary in
"width" or "steepness", but they all have the same
basic "U" shape.
A. F(X)= X 3 - 2 X + 1
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