Simplify:

(5x^3 + x^2 - x)/ (3x)

divide top and bottom by x

(5 x^2 + x - 1)/3

I'm not sure what I am doing with my life.

To simplify the given expression (5x^3 + x^2 - x) / (3x), we can do the following steps:

Step 1: Factor out the common term from the numerator.
In this case, the common term is x, so we can rewrite the numerator as x(5x^2 + x - 1).

Step 2: Rewrite the expression with the factored form.
The simplified expression becomes x(5x^2 + x - 1) / (3x).

Step 3: Cancel out the common factor.
Since we have x as a common factor in both the numerator and denominator, we can cancel them out, leaving us with:
(5x^2 + x - 1) / 3.

Therefore, the simplified form of the expression (5x^3 + x^2 - x) / (3x) is (5x^2 + x - 1) / 3.