Answer:
The correct choice is f(x)= 2x²
Explanation:
In algebra, a quadratic function is a polynomial of degree 2 in which the highest-degree term is of the second degree. In other words it is a polynomial function with one or more variables which gives two answers in the end. The graph of a quadratic function is shown as a curve called a parabola. These parabolas may open upward or downward and vary in slopes but they all have the same basic "U" shape.