
Home > A2C > Chapter 9 > Lesson 9.3.2 > Problem 9-149
9-149.
Substitute 2 into the equation for every x.
8 − 24 + 14 + 2 = 0
0 = 0
Use the value for x given in problem a to calculate the factor.
(x − 2)
Try using a generic rectangle.
(x2 − 4x −1)
See part (a) for one solution.
Use the quadratic formula to find the other solutions in the equation x2 − 4x − 1.