Needed help solving this math problem.

Question

4n^2 - 1 =0

n=?

Answer 1

4n² - 1 = 0                     Given

4n² = 1                          Add 1 to each side

n² = 1/4                         Divide each side by 4

n = +/-1/2                      Take the square root of each side (remember that the answer can be positive or 
                                     negative)