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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    @saseal

  2. anonymous
    • one year ago
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    expand the 3(x+4)^2 first

  3. anonymous
    • one year ago
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    i got 3x^2 +48x+1

  4. anonymous
    • one year ago
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    \[3(x+4)(x+4)+1\]now expand it

  5. anonymous
    • one year ago
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    not sure can you do the next step

  6. welshfella
    • one year ago
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    the standard form of the vertex equation is y = a(x - h)^2 + k where (h,k) is the coordinates of the vertex ans x = h is the axis of symmetry

  7. welshfella
    • one year ago
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    so compare you equation with this form h = ?

  8. anonymous
    • one year ago
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    4?

  9. welshfella
    • one year ago
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    not quite -h = +4 so h = -4 axis of symmetry is x = -4

  10. anonymous
    • one year ago
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    okay thanks

  11. welshfella
    • one year ago
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    yw

  12. welshfella
    • one year ago
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    do you follow the logic ok?

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spraguer (Moderator)
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