Question

If f(x) = 3x^2 +1 and g(x) = 1-x, what is the value of (f-g)(2)

Answer 1

14

Explanation:

Let's find (f-g)(x)

`3x^(2) + 1 - (1-x)\\3x^(2) + 1 -1 + x\\3x^(2) + x`

Now let's plug in x=2, so to find (f-g)(2)

`3(2)^(2) + 2\\12 + 2 = 14`