Answer:
The sum of given expressions is [tex]4x^3+4x^2+5[/tex].
Step-by-step explanation:
The given expressions are
[tex]3x^3-2x+8,2x^2+5x,x^3+2x^2-3x-3[/tex]
We have find the sum of all these expressions.
[tex]3x^3-2x+8+2x^2+5x+x^3+2x^2-3x-3[/tex]
Combine like terms.
[tex](3x^3+x^3)+(2x^2+2x^2)+(-2x+5x-3x)+(8-3)[/tex]
[tex]4x^3+4x^2+(0)+(5)[/tex]
[tex]4x^3+4x^2+5[/tex]
Therefore the sum of given expressions is [tex]4x^3+4x^2+5[/tex].
