Question

30 pts! solve the following equation. (x - 18)^2 = 1

A. x= 19 and x=17
B. x = -19 and x= -17
C. x=-19 and x= 17
D. x= 19 and x= -17

Answer 1

D

Explanation:

Answer 2

D - x = 19 x = -17

Explanation:

Factor the equation to make the problem easier - you should have this:

(x - 18) (x + 18) = 1

Set each binomial to 1:

x - 18 = 1

x + 18 = 1

This should give you x = 19 and x = -17