Expand and simplify the following: -6(-2x-3)(x-1)

Starting by distributing the -6 to both terms inside the first set of parentheses, we get:

-6(-2x) - 6(-3)(x-1)

Which simplifies to:

12x + 18(x-1)

Expanding further:

12x + 18x - 18

Combining like terms:

30x - 18

So, the expanded and simplified expression is 30x - 18.