CPM Homework Help : INT2 Problem 5-79

Examine the graph of $y = 2x^{2} + 2x - 1$ at right.

Estimate the $x$ ‑intercepts of the parabola.
Answer (a):
$x$ -intercepts $\approx−1.4$ and $0.4$
What happens if you try to use the Zero Product Property to determine the zeros of $2x^2 + 2x - 1 = 0$ ?
Answer (b):
The quadratic is not factorable.

An upward parabola with the vertex in the third quadrant going through the point (0, comma negative 1). The left x intercept is almost halfway between negative 2 and negative 1. The right x intercept is almost halfway between 0 and 1.