Answer:
A. 3x^3 - x^2 - x + 4
Explanation:
To simplify the expression 3x^3 - 2x + 4 - x^2 + x, you can combine like terms:
First, let's combine the terms with the same exponent:
3x^3 - x^2
Next, let's combine the terms without exponents:
-2x + x
Now we can simplify further:
3x^3 - x^2 - x
Finally, let's combine it with the constant term:
3x^3 - x^2 - x + 4