Question

What is (f - g)(x)?
f(x) = -x
g(x) = -3x2 - x

Answer 1

3x²

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.