Type your answer (3 out of 2 Evaluate the function $f(x)=2 x^{2}-5 x$ when $x=4$

Step 1 ：The question is asking to evaluate the function \(f(x)=2 x^{2}-5 x\) when \(x=4\).

Step 2 ：To solve this, we need to substitute \(x=4\) into the function and simplify the expression.

Step 3 ：Substituting \(x=4\) into the function, we get \(f(4)=2(4)^{2}-5(4)\).

Step 4 ：Simplifying the expression, we get \(f(4)=12\).

Step 5 ：Final Answer: The value of the function \(f(x)=2 x^{2}-5 x\) when \(x=4\) is \(\boxed{12}\).