beyondmelaniee beyondmelaniee
  • 31-05-2019
  • Mathematics
contestada

f(x)= 7x^5+35x^4-2x^3-4x^2+30x+8
find f(-5)

Respuesta :

Luv2Teach
Luv2Teach Luv2Teach
  • 03-06-2019

Answer:

8

Step-by-step explanation:

When you are told to find f(-5), that means that you are to sub in a -5 for every x you see.  That -5 could be any number or expression.  Subbing in a -5 looks like this:

[tex]7(-5)^5+35(-5)^4-2(-5)^3-4(-5)^2+30(-5)+8[/tex]

Be careful with all those negatives.  Doing the math on that gives you that f(-5) = 8

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