Respuesta :

Simplify each term: 5x^4y + 7x^4y - 5x^5 - 5x^3z + 3x^3z

Combine like terms: -5x^5 + 12x^4y -2x^3z  

That is the most simplified form.

If necessary, factor:

x^3(-5x^2+12xy-2z)