2/3 = 5n-81/{([n-1]/4)^2 -10} What is n?
All help greatly appreciated
Your formatting is ambiguous; I think you mean the following:
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If so, then a good first step in solving this rational equation is probably to multiply through, to get rid of the denominators:
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Then collect all the terms on one side of the "equals" sign:
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Then apply the Quadratic Formula to solve for "n". Remember to check your solutions in the original equation, making sure that they don't cause any "division by zero" problems.