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nik919

  • 3 years ago

Let f(x) = x + 2 and g(x) = x2 - 6x + 3. Find g(f(x))

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  1. TheViper
    • 3 years ago
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    @ganeshie8 plz help :)

  2. moongazer
    • 3 years ago
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    g(f(x)) = g(x + 2) = (x + 2)^2 - 6(x + 2) + 3

  3. moongazer
    • 3 years ago
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    do you know what's next?

  4. nik919
    • 3 years ago
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    no :(

  5. nik919
    • 3 years ago
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    do you distribute the ^2 and the -6 into each parenthesis?

  6. moongazer
    • 3 years ago
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    (x + 2)^2 = (x + 2)(x + 2) - 6(x + 2) = -6(x) + -6(2)

  7. nik919
    • 3 years ago
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    so would the final answer be x^2 - 2x - 5?

  8. moongazer
    • 3 years ago
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    yup :)

  9. nik919
    • 3 years ago
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    THANKS!

  10. moongazer
    • 3 years ago
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    this might help you http://www.khanacademy.org/math/algebra/algebra-functions/v/functions-part-2

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