Answer:
B and C are Quadratic Functions.
Explanation:
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The degree in a quadratic function is 2, so a term can only be raised to the second degree for it to be quadratic.
The first option doesn't have a second degree, so it is not quadratic.
The second option has x raised to the second degree, so it is quadratic.
The third option has a term raised to the second degree, so it is quadratic.
The third option has a term raised to the 3rd degree, so it is not quadratic.