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anonymous

  • 5 years ago

got a long one f(x) = x+5 and g(x) = x+8 find the following (f+g)(x) then (f-g)(x) and then (fg)(x) last one f/g)(x)

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  1. anonymous
    • 5 years ago
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    (f+g)(x)=f(x)+g(x) similar for (f-g)(x) (fg)(x)=f(x)g(x) (f/g)(x)=f(x)/g(x)

  2. anonymous
    • 5 years ago
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    ? thats not the answers?

  3. anonymous
    • 5 years ago
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    u r to substitute the values only

  4. anonymous
    • 5 years ago
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    do u know how to do it?

  5. anonymous
    • 5 years ago
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    no? Im stuck I keep getting different answers

  6. anonymous
    • 5 years ago
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    ok (f+g)(x)=f(x)+g(x)=x+5+x+8=2x+13

  7. anonymous
    • 5 years ago
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    got it?

  8. anonymous
    • 5 years ago
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    ah ok

  9. anonymous
    • 5 years ago
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    can u do the rest?

  10. anonymous
    • 5 years ago
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    I can do the next step,,, how would I do the (fg)(x) one?

  11. anonymous
    • 5 years ago
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    (fg)(x)=f(x)g(x)=(x+5)(x+8)=x^2+13x+40

  12. anonymous
    • 5 years ago
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    the (f-g) would be 2x-3 for the answer right?

  13. anonymous
    • 5 years ago
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    it would be -3 only, x is cancelled out

  14. anonymous
    • 5 years ago
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    oh..crap k

  15. anonymous
    • 5 years ago
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    did u get the product ?

  16. anonymous
    • 5 years ago
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    last one would be x+5/x+8

  17. anonymous
    • 5 years ago
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    right

  18. anonymous
    • 5 years ago
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    sweet ... think I get it now thank you :)

  19. anonymous
    • 5 years ago
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    :)

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spraguer (Moderator)
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