Question

Evaluate f(-5) for the following function.
f(x) = x2 + x – 9

Answer 1

39

Explanation:

f(x) = x2 + x – 9

f(-5) = -5² + -5 -9

f(-5) = 25 + 14

f(-5) = 39

Answer 2

-24

Explanation:

-5 times 2 is negative 10. Negative 10 plus negative 5 is negative fifteen. Negative fifteen minus nine is Negative 24, or -24.