1. Which of the following are solutions to x2 - 4x - 5 = 0? List all correct answers

a. - 5

c. - 1

b. 5

d. 1

c. - 1

b. 5

Step-by-step explanation:

x^2 - 4x - 5 = 0

Factor

What two numbers multiply to - 5 and add to - 1

-5*1 = - 5

-5+1 = - 4

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

Using the zero product property

x-5 = 0 x+1 = 0

x=5 x=-1