Question

Find the solution(s) for x in the equation below.

x^2 - 25 = 0
A. x = -5
В. no solutions
C. x = 5
D. x = 5; x = -5

Answer 1

D. x = 5; x = -5

Explanation:

x^2 - 25 = 0

Add 25 to each side

x^2 - 25+25 = 0+25

x^2 = 25

Take the square root of each side

sqrt(x^2) = sqrt(25)

x = ±5