Lorena01 Lorena01
  • 07-07-2018
  • Mathematics
contestada

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

Let fxx28x5 Find f1 class=

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Cowmilk
Cowmilk Cowmilk
  • 07-07-2018

[tex]f( - 1) = ( - 1)^{2} - 8( - 1) + 5 \\ = 1 + 8 + 5 \\ = 14 \\ \\ f( - 1) = 14[/tex]
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carlosego
carlosego carlosego
  • 07-07-2018
For this case we have the following function:
 [tex]f (x) = x ^ 2-8x + 5 [/tex]
 To find the value of f (-1) we must substitute x = -1 in the given expression.
 We have then:
 [tex]f (-1) = (- 1) ^ 2-8 (-1) +5 [/tex]
 Rewriting we have:
 [tex]f (-1) = 1 + 8 + 5 f (-1) = 14[/tex]
 Answer:
 
The value of the function f (x) in evaluated for x = -1 is given by:
 
[tex]f (-1) = 14 [/tex]
 option 4
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