What is the difference of the polynomials? (-2x3y2 + 4x2y3 - 3xy4) - (6x4y - 5x2y3 - y5) - 6x4y - 2x3y2 + 9x2y3 - 3xy4 + y5 - 6x4y - 2x3y2 - x2y3 - 3xy4 - y5 - 6x4y + 3x3y2 + 4x2y3 - 3xy4 + y5 - 6x4y - 7x3y2 + 4x2y3 - 3xy4 - y5

The resulting polynomial upon applying the operations specified by the equation is - 30 (x^4) y + 4 (x^3) (y^2) + 25 (x^2) (y^3) - 15x (y^4) + y^5. This was obtained by first grouping together like terms - these terms have the same variables raised to the same number. And then, the operations were applied.