Show that the bowtie method can be used to multiply (2x - 27) (-x + 15)

Ok so.

First - 2x times - x=-2x^2

Outer - 2x times 15=30x

Inner - - 27 times - x=27x

Last - - 27 times 15 = - 405

So now - 2x^2 + 30x+27x-405

Simplify down to get - 2x^2 + 57x-405