document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=133075>Question 133075</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello!<BR>\n" );
document.write( "I need help with a few problems that I'm having difficulty with. <BR>\n" );
document.write( "1) [(1+i)/i] - [(3)/(4-i)]<BR>\n" );
document.write( "For the common denominator, I got i(4-i)= 4i-1<BR>\n" );
document.write( "Do you multiply this normally or do you need a conjugate?\r<BR>\n" );
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document.write( "2) (sqrt-15) * (sqrt-15) <BR>\n" );
document.write( "I really do not understand this problem.\r<BR>\n" );
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document.write( "Any help would be greatly appreciated! Thank you!<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #97290 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=97290\">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=%28%281%2Bi%29%2Fi%29+-+%28%283%29%2F%284-i%29%29 ALIGN=MIDDLE  ALT=\"%28%281%2Bi%29%2Fi%29+-+%28%283%29%2F%284-i%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "On the common denominator, you missed it by THAT much...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i%284-i%29=4i-%28i%5E2%29=4i-%28-1%29=4i%2B1=1%2B4i ALIGN=MIDDLE  ALT=\"i%284-i%29=4i-%28i%5E2%29=4i-%28-1%29=4i%2B1=1%2B4i\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28%281%2Bi%29%284-i%29%29%2F%281%2B4i%29%29+-+%28%283i%29%2F%281%2B4i%29%29=%28%284%2B3i%2B1%29-3i%29%2F%281%2B4i%29=5%2F%281%2B4i%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now you need the conjugate of the denominator in order to rationalize the denominator:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285%2F%281%2B4i%29%29%28%281-4i%29%2F%281-4i%29%29=%285-20i%29%2F%281%2B16%29=%285%2B20i%29%2F17 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "For your other problem, I think you mean:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-15%29sqrt%28-15%29 ALIGN=MIDDLE  ALT=\"sqrt%28-15%29sqrt%28-15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28i%2Asqrt%2815%29%29%28i%2Asqrt%2815%29%29=i%5E2%2A15=-15 ALIGN=MIDDLE  ALT=\"%28i%2Asqrt%2815%29%29%28i%2Asqrt%2815%29%29=i%5E2%2A15=-15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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