n^2 - 1 = -99/100
Add 1 (100/100) to each side:
n^2 - 1 + 1 = -99/100 + 100/100
Cancel the 1's on the left side:
n^2 = 1/100
Take the square root of both sides:
n = 1/10 or -1/10
Add 1 (100/100) to each side:
n^2 - 1 + 1 = -99/100 + 100/100
Cancel the 1's on the left side:
n^2 = 1/100
Take the square root of both sides:
n = 1/10 or -1/10