The general form of a quadratic function is Investigate if the functions are in this form.
The function has two terms. Thus, they can be added. The function does not have an -term or constant but it simply means that these terms are zero, so Therefore, is a quadratic function.
The function contains an -term, but also the term Hence, it does not fit the form and is not a quadratic function.
We see directly that the function is not a quadratic function because it contains a variable that is raised to