Question

F(x) = x^2 + 4x + 7

f(−1)

Answer 1

f(- 1) = 4

Explanation:

to evaluate f(- 1) , substitute x = - 1 into f(x)

f(x) = x² + 4x + 7 , then

f(- 1) = (- 1)² + 4(- 1) + 7 = 1 - 4 + 7 = 4