document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=66452>Question 66452</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0078659752/algebrahomeworkh>Algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> im having trouble with  2 radical 7 over 3 radical 5 + 5 radical 3.  I know to multiply the top and bottom by 3 radical 5 + 5 radical 3 but what im getting doesnt seem right. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #47140 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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/cgi-bin/show-face.mpl?user=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=47140\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  im having trouble with 2 radical 7 over 3 radical 5 + 5 radical 3. I know to multiply the top and bottom by 3 radical 5 + 5 radical 3 but what im getting doesnt seem right.<BR>\n" );
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document.write( "You are on the right track except that you multiply the top and bottom by      3 radical 5 - 5 radical 3.  This is called the conjugate and in this case it will get rid of the radicals in the denominator.\r<BR>\n" );
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document.write( "2sqrt7/(3sqrt5+5sqrt3)  multiply top and bottom by (3sqrt5-5sqrt3) and we get:\r<BR>\n" );
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document.write( "(2sqrt7(3sqrt5-5sqrt3))/((3sqrt5+5sqrt3)(3sqrt5-5sqrt3))  multiplying we get:\r<BR>\n" );
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document.write( "(6sqrt(7)(5)-10sqrt(7)(3))/(45-75) and this equals<BR>\n" );
document.write( "6sqrt(7)(5)-10sqrt(7)(3))/(-30) dividing top and bottom by 2<BR>\n" );
document.write( "(3sqrt(7)(5)-5sqrt(7)(3))/-15  factor out sqrt7 in the numerator:\r<BR>\n" );
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document.write( "(sqrt7(3sqrt5-5sqrt3))/-15\r<BR>\n" );
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document.write( "This should be it---ck using a calculator\r<BR>\n" );
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document.write( "Hope this helps----ptaylor </SPAN>\n" );
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