document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=73878>Question 73878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help I do not understand how to solve them ..Can someone show me step by step please....chapter 9 sect.9.4 # 28 \r<BR>\n" );
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document.write( "Perform the indicated multiplication. Then simplify each radical expression.\r<BR>\n" );
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document.write( "Problem #28\r<BR>\n" );
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document.write( "radical (7) (2radical(3) + 3 radical (7) ) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52865 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=52865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> radical (7) (2radical(3) + 3 radical (7) )<BR>\n" );
document.write( "The rule for multiply radicals is (sqrt(a))(sqrt(b))=sqrt(ab)<BR>\n" );
document.write( "Your problem:<BR>\n" );
document.write( "= [2(sqrt(7)*sqrt(3)] +[(sqrt(7)*(3sqrt7)]\r<BR>\n" );
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document.write( "=[2sqrt(21) + 3*7]\r<BR>\n" );
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document.write( "=2sqrt21 + 21 \r<BR>\n" );
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document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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