Question

Given that F(x) = x² + 2, evaluate F(1) + F(5).
is the answer 38?

Answer 1

no, it's 30...

Answer 2

F(1) = 1² + 2 = 3
F(5) = 5² + 2 = 27
F(1) + F(2)= 30

Answer 3

plug in 1 into f(x)...then separately plug in 5 into f(x)... add them

f(1)= (1)^2 + 2
f(1) = 3

f(5)= 5^2+ 2
f(5) = 27

27+3 = 30