12x(0,5-4x) + 2x (24x-1) =

Let's simplify the expression step by step:

$$12x(0.5 - 4x) + 2x(24x - 1) =$$

First, distribute the 12x to both terms inside the first parenthesis and the 2x to both terms inside the second parenthesis:

$$6x - 48x^2 + 48x^2 - 2x =$$

Now, combine like terms:

$$4x$$

Answer: 4x