Respuesta :

Given:

an expression is given as below

[tex]2y^3-4x^2-4-1+3x^2-3y^3-y^3[/tex]

Find:

we have to combine like terms.

Explanation:

we will combine like terms as follows

[tex]\begin{gathered} 2y^3-4x^2-4-1+3x^2-3y^3-y^3=y^3(2-3-1)+x^2(-4+3)-4-1 \\ =-2y^3-x^2-5 \end{gathered}[/tex]

Therefore, the answer is

[tex]-2y^3-x^2-5[/tex]