### Home > CAAC > Chapter 11 > Lesson 11.1.5 > Problem 11-56

11-56.

The denominator cannot be equal to zero. What value(s) of x would make the denominator zero?

( 2x + 1 )( x + 5 ) = 0

2x^{2} + 11x + 5 = 0

x ≠ −0.5 or −5

Factor both the numerator and the denominator.

Look for 1.