Calculate the x-intercepts for the graph of each function below.

1. $y=(x−2)(x+1)$ 

   Step 1(a):

   $0=(x−2)(x+1)$

   Step 2(a):

   Use the Zero Product Property to solve:

   $x−2=0\ \text{or}\ x+1=0$

2. $y=2x^2+16x+30$ 

   Step 1(b):

   Set $y$ equal to $0$.

   Step 2(b):

   Factor.

   Hint (b):

   One of the factors is $(x + 5)$. What is the other factor?

   Step 3(b):

   Use the Zero Product Property to solve.