Frostbite Frostbite
  • 14-05-2024
  • Mathematics
High School

Given the function [tex]f(x) = 7x^5 + 35x^4 - 2x^3 - 4x^2 + 30x + 8[/tex], find [tex]f(-5)[/tex].

Answer :

Luv2Teach Luv2Teach
  • 01-12-2023

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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