The problem asks us to simplify the expression $-3x(x-5)$.

1. Problem Description

The problem asks us to simplify the expression $-3x(x-5)$.

2. Solution Steps

First, distribute the $-3x$ to both terms inside the parentheses:

$-3x * x = -3x^2$

$-3x * (-5) = 15x$

Then, combine the results:

$-3x(x-5) = -3x * x - 3x * (-5) = -3x^2 + 15x$

3. Final Answer

$-3x^2 + 15x$