(3хв3 степени у-ху во 2у) -(2х в 3 у+6ху-у)

Let's simplify the equation step by step.

First, let's expand the expression (3x^3y^2) - (2x^3y + 6xy - y):

= 3x^3y^2 - 2x^3y - 6xy + y

Now, let's group similar terms together:

= (3x^3y^2 - 2x^3y) + (-6xy + y)

Next, we can factor out common terms from each group:

= x^3y(3y - 2) + y(-6x + 1)

Finally, we can rearrange the terms:

= x^3y(3y - 2) - y(6x - 1)

This is the simplified form of the given expression: x^3y(3y - 2) - y(6x - 1).