CPM Homework Help : A2C Problem 9-20

Find the roots (the solutions when $y = 0$ ) of each of the following polynomial functions.

$y = x^{2} − 6x + 8$
Hint (a):
Factor the right side and use the Zero Product Property.
Answer (a):
$x = 2, x = 4$

b. $f\left(x\right) = x^{2} − 6x + 9$

Hint (b):

See part (a).

Answer (b):

$x = 3$