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boomzoom

  • 2 years ago

Let f(x) = x + 8 and g(x) = x2 - 6x - 7. Find f(g(2)).

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  1. lgbasallote
    • 2 years ago
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    first what is g(2)?

  2. boomzoom
    • 2 years ago
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    ???

  3. lgbasallote
    • 2 years ago
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    what do you mean "????"

  4. boomzoom
    • 2 years ago
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    your question said what is g(2) that how the poblem was given

  5. Coda
    • 2 years ago
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    First you must find g(2) by putting into the equation for g(2). Then you would take the step as to put what g(2) = into the f(x) equation.

  6. Coda
    • 2 years ago
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    By putting 2 into the equation for g, excuse me. Its a multi-step equation.

  7. Wired
    • 2 years ago
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    When you see g(2), that means solve g(x) where x = 2. \[\Large g(x) = x^{2}-6x-7\] \[\Large g(2) = 2^{2}-(6*2)-7= ?\]

  8. lgbasallote
    • 2 years ago
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    f(g(2) ) means you find g(2) then substitute that to x in f(g(2) )

  9. boomzoom
    • 2 years ago
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    oh ok

  10. Wired
    • 2 years ago
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    Note: Alternatively you could solve it all at once (but that may confusing right off the bat): \[\Large f(g(2)) = (x^{2}-6x-7)+8 = x^{2}-6x+1\]

  11. Wired
    • 2 years ago
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    What did you get for g(2)?

  12. boomzoom
    • 2 years ago
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    -15

  13. Wired
    • 2 years ago
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    Correct. Since g(2)=-15, that means f(g(2)) = f(-15). \[\Large f(x) = x+8\] \[\Large f(-15) = -15+8 = ?\]

  14. timo86m
    • 2 years ago
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    Let f(x) = x + 8 and g(x) = x2 - 6x - 7. Find f(g(2)). first find g(2) then once you find that plug that to f(x)

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