Question

What are the solution(s) of x2-4=0

Answer 1

Answer: x = 2 or x = -2

Explanation:

I presume the question is asking for the equation of x^2 - 4 = 0

x^2 - 4 = 0

add 4 to both sides

x^2 = 4

square root both sides

x = sqrt(4)

which is +/- 2