2х(34-7х)

To simplify the expression \(2x(34 - 7x)\), you can distribute \(2x\) to both terms inside the parentheses:

\[ 2x(34) - 2x(7x) \]

This results in:

\[ 68x - 14x^2 \]

So, the simplified form of the expression \(2x(34 - 7x)\) is:

\[ -14x^2 + 68x \]