Question

F (x) = x2 – 5, what is f(1)

Answer 1

ANSWER: -3

WHY: since 1 is x we replace the x which creates f(1) = 1•2-5
Then we multiply 1•2 which gives us 2 so now f(1)=2-5
Lastly we subtract 2-5 which results in -3 making f(1)= -3

Answer 2

-3

Explanation:

f(x)=x2-5 f(1)

f(1)= (1)2 -5

2-5

-3