Question

Let f(x)=x^2-8x+5. Find f(-1)

Answer 1

`f( - 1) = ( - 1)^(2) - 8( - 1) + 5 \\ = 1 + 8 + 5 \\ = 14 \\ \\ f( - 1) = 14`

Answer 2

For this case we have the following function:

`f (x) = x ^ 2-8x + 5`
To find the value of f (-1) we must substitute x = -1 in the given expression.
We have then:

`f (-1) = (- 1) ^ 2-8 (-1) +5`
Rewriting we have:

`f (-1) = 1 + 8 + 5 f (-1) = 14`
Answer:
The value of the function f (x) in evaluated for x = -1 is given by:

`f (-1) = 14`
option 4