Answer:
Explanation:
Comment
In general, f(x) can be thought of as being y. So the equation could read as "Let x = - 2" when y = x^2 - 3x + 5.
Another way of thinking of it is by saying f(-2), wherever you see an x on the right hand side, substitute the value given on the left side (in this case x = - 2
Solution
f(-2) = (-2)^2 - 3x + 5
f(-2) = 4 - 3(-2) + 5 Combine
f(-2) = 4 + 6 + 5 Add
f(-2) = 15