Chapter 2 - Linear and Quadratic Functions - Section 2.3 Quadratic Functions and Their Zeros - 2.3 Assess Your Understanding - Page 146: 89

(a) See graph. (b) $-6,-2$ (c) See graph.

(a) To obtain the graph of $y=2(x+4)^2-8$ from $y=x^2$, shift the curve 4 units to the left, stretch vertically by a factor of 2, then shift 8 units down. See graph. (b) We can find the real zeros $x=-6,-2$ (c) See graph.