How can you determine if a function is a quadratic function from its equation?

Any quadratic equation always comes in the form


where a, b, and c are constant.

few examples;

where , , and 


where , , and 


At first, this equation doesn't look like a quadratic equation but with a little rearranging, it will.



This form also needs to be manipulated to get the quadratic form; by multiplying out we have 

Can you tell us the question