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Which equation is the inverse of y = 9^2 - 4?

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  1. 30 May, 22:25
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    kkjkkji888778
  2. 30 May, 22:31
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    Y = 9x^2 - 4

    x = 9y^2 - 4

    x + 4 = 9y^2

    (x+4) / 9 = y^2

    plus or minus

    /sqrt{ ((x + 4) / div 9} = y
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