Question

The functions f(x) = –(x − 1)2 + 5 and g(x) = (x + 2)2 − 3 have been rewritten using the completing-the-square method. Is the vertex for each function a minimum or a maximum? Explain your reasoning for each function.

Answer 1

what's a minimum anyway? what is a maximum?

Answer 2

hint: negative leading term coefficient, means the parabola is opening downwards
positive leading term coefficient, means is going upwards