Determine Max or Min Without Graphing

[nycmath]

Precalculus
Michael Sullivan
Edition 10
Chapter 3, Section 3.3

Instructions

Determine, without graphing, whether the given quadratic function has a maximum or minimum value, and then find the value.

56. f(x) = -2x^2 + 12x

58. f(x) = 4x^2 - 8x +3