Question

If f(x) = 3 - x^2, find f(-2).

Answer 1

f(-2) = -1

Explanation:

f(-2) means that we plug in -2 for x in f(x) = 3 - x^2:

f(-2) = 3 - (-2)^2

f(-2) = 3 - 4

f(-2) = -1

Thus, f(-2) = -1