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Originally Posted by HappyFeet x= -4√x+12
now, squaring both sides and solve the quadratic eqn.
Originally Posted by HappyFeet X= -4√x+12 What are you trying to do? Solve for x? Then: .
One of the solutions to this equation is the solution to , the other is not (it's an extraneous solution and is in fact the solution to ).
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