document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=77819>Question 77819</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (7+ (square root of 3)(7 - square root of 3)   I didn't know how to type the square root sign </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #55799 by </B><A HREF=/tutors/aboutme.mpl?userid=uma><B>uma(370)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=uma><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=55799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "(7 +  sqrt 3) ( 7 - sqrt3)\r<BR>\n" );
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document.write( "= 7^2 - (sqrt3)^2  [as (a + b)(a-b) = a^2 - b^2 ]\r<BR>\n" );
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document.write( "= 49 - 3\r<BR>\n" );
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document.write( "= 46\r<BR>\n" );
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document.write( "Good Luck </SPAN>\n" );
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