Answer :
sqrt(2x + 10^-6) = 2
2x + 10^-6 = 2^2 = 4
2x = 4 - 10^-6 = 3.999999
x = 3.999999 / 2 = 1.9999995
2x + 10^-6 = 2^2 = 4
2x = 4 - 10^-6 = 3.999999
x = 3.999999 / 2 = 1.9999995