The complete question is:
Which represents a quadratic function?
[tex]f(x)=2x^3+2x^2-4\\ \\ f(x)=-7x^2-x+2\\ \\ f(x)=-3x+2\\ \\ f(x)=0x^2+3x-3[/tex]
Answer:
Explanation:
The polynomial functions are classified according to the degree of the leading term, i.e. the term with the variable raised to the highest exponent.
Thus:
And so on.
Thus the only quadratic function among the expressions given is the second choice:
The first choice is a cube function (the highest exponent is 3), the third choice is a linear function (highest exponent is 1).
The fourth choice is also a linear function because the coefficient of the term with exponent 2 is zero, meaning that this term does not exist.
