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Homework Help: I'm trying to isolate x to find range, but unsure how to manipulate equation.

  1. Apr 21, 2012 #1
    1. The problem statement, all variables and given/known data
    Find Range

    2. Relevant equations

    3. The attempt at a solution

    y-5=8x^2+8x Subtracted five both sides

    (y-1)/8=(x+1)x divided 8 to both sides, and factored x out.

    The x^2+x part has me stumped.
  2. jcsd
  3. Apr 21, 2012 #2


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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi My8th! Welcome to PF! :smile:

    (try using the X2 button just above the Reply box :wink:)

    solve 8x2 + 8x + 5 - y = 0 :wink:
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