Question

What are the solution(s) of x^2-4=0?
х = -4 or x=4
х=-2 or x= 2
х=2
х=4

Answer 1

x = - 2 or x = 2

Explanation:

Given

x² - 4 = 0 ( add 4 to both sides )

x² = 4 ( take the square root of both sides )

x = ±
`√(4)` = ± 2

Thus x = - 2 or x = 2