egor61 egor61
  • 04-11-2020
  • Mathematics
contestada

f(x) = -4x2 – 7x + 4
Find f(-7)

Respuesta :

Stephen46
Stephen46 Stephen46
  • 04-11-2020

Answer:

f(-7) = 249

Step-by-step explanation:

[tex]f(x) = - 4 {x}^{2} - 7x + 4[/tex]

To find f(-7) , substitute the value of x that's - 7 into f(x). That is for every x in f(x) replace it with - 7

We have

[tex]f( - 7) = - 4 ({ - 7})^{2} - 7( -7 ) + 4 \\ = 4(49) + 49 + 4 \\ = 196 + 53 \: \: \: \: \: \: \: \: \: \: \: [/tex]

We have the final answer as

f( -7) = 249

Hope this helps you

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