Answer:
P(x) = (x + 1)(x - 1) or P(x) = x²-1
Explanation:
What the first statement means is that the roots are found where y (or f(x)) equals 0 - along the x-axis. Identify the x-values of the graph along the x-axis: -1, 1
For the second statement, you can construct an equation from the roots by setting them up in factors: (x - -1)(x - 1) ⇒ (x + 1)(x - 1)