In Exercises, complete the square to:
a) Find the vertex;
b) Find the axis of symmetry;
c) Determine whether there is a maximum or minimum value and find that value;
d) Find the range; and
e) Graph the function.
1. f (x) = -4x2 + 3x - 1
2. f (x) = 5x2 - 10x + 3