document.write( "Question 172243This question is from textbook Introductory Algebra
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\n" ); document.write( "\n" ); document.write( "sqrt 4x + sqrt 81x^3 \n" ); document.write( "

Algebra.Com's Answer #127339 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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\n" ); document.write( " $\"sqrt%284x%29\"$ + $\"sqrt%2881x%5E3%29\"$
\n" ); document.write( "Factor inside radicals to reveal the perfect squares:
\n" ); document.write( " $\"sqrt%282%2A2x%29\"$ + $\"sqrt%289%2A9%2Ax%2Ax%2Ax%29\"$
\n" ); document.write( "extract the perfect squares:
\n" ); document.write( " $\"2%2Asqrt%28x%29\"$ + $\"9x%2Asqrt%28x%29\"$
\n" ); document.write( "Simplify to:
\n" ); document.write( " $\"sqrt%282%29%289x%2B2%29\"$
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