CPM Homework Help : CAAC Problem 8-87

Examine the graph of $y=2x^2+2x−1$ at right.

Estimate the zeros $y=2x^2+2x−1$ from the graph.
Hint (a):
Where are the $x$ -intercepts of this graph?
What happens if you try to use the Zero Product Property to find the roots of $2x^2+2x−1=0$ ?
Hint (b):
What makes the Zero Product Property difficult to use here?

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.