We will want to combine like terms.
Let’s look at all the variables with x^3
We have 6x^3 - 4x^3 which can simplify to 2x^3.
Now let’s look at those with y^2
We have 5y^2 - 6y^2 which can simplify to -y^2.
Now let’s look at z
We have -2z and 5z which can simplify to 3z.
Now that we have found all common terms, let’s combine what we have left.
2x^3 -y^2 +3z +y
And that will be our final answer.
In the future, cross out each common term after you combine them so it is easier to find the terms you haven’t combined/simplified yet! :)