document.write( "Question 249427: For what values of x is the expression sqrt(4x-x^2) defined as a real number. \n" ); document.write( "
Algebra.Com's Answer #181699 by checkley77(12844)\"\" \"About 
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sqrt(4x-x^2)
\n" ); document.write( "SQRT[X^2-4X]
\n" ); document.write( "SQRT[X(X-4)]
\n" ); document.write( "X=0 & X=4
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