Simplify the following:
sqrt(108) - sqrt(48)
sqrt(48) = sqrt(2^4×3) = 2^2 sqrt(3):
sqrt(108) - 2^2 sqrt(3)
2^2 = 4:
sqrt(108) - 4 sqrt(3)
sqrt(108) = sqrt(2^2×3^3) = 2×3 sqrt(3):
2×3 sqrt(3) - 4 sqrt(3)
2×3 = 6:
6 sqrt(3) - 4 sqrt(3)
6 sqrt(3) - 4 sqrt(3) = 2 sqrt(3):
2 sqrt(3)
