5√3x + 1/2√12x - 10√0.03x

To simplify this expression, we first need to simplify the square roots:

5√3x + (1/2)√(12x) - 10√(0.03x)

Next, simplify the square roots further:

5√3x + √(43x) - 10√(3*0.01x)
5√3x + √4√3√x - 10√3√0.01√x
5√3x + 2√3√x - 1√3√x

Combine like terms:

5√3x + 2√3x - 1√3x
= 6√3x

Therefore, the simplified expression is 6√3x.