Answer:
3x²
Step-by-step explanation:
In this question, you will plug in the expressions into the question and solve.
We know what f(x) and g(x) is, so plug in it and solve:
-x - (-3x² - x)
Distribute the negative to the variables inside the parenthesis.
-x + 3x² + x
Combine like terms.
3x²
Since this is what we're left with (we can't simplify further), 3x² would be your final answer.
