anonymous
  • anonymous
4. If f(x) = 4x + 1 and g(x) = −x − 2, find (f + g)(−1).
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
What (f+g)(-1) means is to add up the two binomials first f(x)+g(x), and then substitute -1 for x. What do you get when you do: 4x+1-x-2
anonymous
  • anonymous
5x=3???
anonymous
  • anonymous
There's no = sign, just simplify it by adding like terms: First do 4x-x, and then 1-2

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anonymous
  • anonymous
3x -1?
anonymous
  • anonymous
@zaynahf
anonymous
  • anonymous
Good.. now just substitute -1 for x
anonymous
  • anonymous
so it's going to be -1x or -3x
anonymous
  • anonymous
No, because you are substituting something for x, there will be no more x. Do this: 3(-1)-1
anonymous
  • anonymous
-4!!
anonymous
  • anonymous
Yep! You got it!
anonymous
  • anonymous
thank you please come to my next post!
anonymous
  • anonymous
Sure..

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