document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=401431>Question 401431</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Multiply (9+ the square root of 10) by (9- the square root of 10). Simplify and type an exact answer using radicals as needed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #284533 by </B><A HREF=/tutors/aboutme.mpl?userid=sofiyac><B>sofiyac(983)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sofiyac><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=sofiyac><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=284533\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%289%2Bsqrt%2810%29%29%289-sqrt%2810%29%29=81-10=70 ALIGN=MIDDLE  ALT=\"%289%2Bsqrt%2810%29%29%289-sqrt%2810%29%29=81-10=70\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "you use the difference of squares formula here <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%2Bb%29%28a-b%29=a%5E2-b%5E2 ALIGN=MIDDLE  ALT=\"%28a%2Bb%29%28a-b%29=a%5E2-b%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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