document.write( "Question 316197: solve: 4 sqrt (x) = 8 + 2 sqrt (x)\r
\n" ); document.write( "\n" ); document.write( "a) (16)
\n" ); document.write( "b) none or 0
\n" ); document.write( "c) (4)
\n" ); document.write( "d)(-4)
\n" ); document.write( "

Algebra.Com's Answer #226194 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"+4+sqrt+%28x%29+=+8+%2B+2+sqrt+%28x%29+\"
\n" ); document.write( "Let \"u=sqrt%28x%29\"
\n" ); document.write( ", then
\n" ); document.write( "\"+4u=8%2B2u\"
\n" ); document.write( "\"+2u=8\"
\n" ); document.write( "\"+u=8\"
\n" ); document.write( "\"+sqrt%28x%29=8\"
\n" ); document.write( "\"+x=64\"
\n" ); document.write( "None of the above.
\n" ); document.write( "b) is the closest answer.
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