CPM Homework Help : CCA2 Problem 8-107

Make rough sketches of the graphs of each of the following polynomial functions. Be sure to label the $x$ - and $y$ - intercepts.

$y = x(2x + 5)(2x - 7)$
Hint (a):
Determine the $x$ -intercepts using the Zero Product Property.
More Help (a):
Use your graphing calculator to check your graph.

$y = (15 - 2x)^2(x + 3)$
Hint (b):
This is a cubic function, but there are only two $x$ -intercepts because on one of the factors is squared. This factor creates a double root.