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7-65.

Once again, Greta is in a pickle! She is trying to solve the following equation and knows she can use u-substitution. Homework Help ✎

  1. Greta thinks if she lets she can write the equation as a quadratic equation. Show Greta she is correct.


    Solve for .
    Then solve for .

  2. Use your answer to part (a) to solve for .