document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=738044>Question 738044</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,<BR>\n" );
document.write( "I've already done a few of these problems in the past, but this time I was confused on one of the steps.The question is \"True or false? 2r3 + 3r2 &#8722; 18r &#8722; 27 = 0 has solutions 3, -3, and 3/2.\"<BR>\n" );
document.write( "So far, I have (2*3)squared, plus 3r squared, minus 18*3/2. I don't know how to simplify the 3r squared part though. Could you help?Thanks(: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #450652 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=450652\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"True or false? 2r3 + 3r2 &#8722; 18r &#8722; 27 = 0 has solutions 3, -3, and 3/2.\"<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28r%29+=+2r%5E3+%2B+3r%5E2+-+18r+-+27 ALIGN=MIDDLE  ALT=\"f%28r%29+=+2r%5E3+%2B+3r%5E2+-+18r+-+27\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "f(3) = 54 + 27 - 54 - 27 = 0<BR>\n" );
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document.write( "f(-3) = -54 + 27 + 54 - 27 = 0<BR>\n" );
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document.write( "f(3/2) = 27/4 + 27/4 - 27 - 27 = -81/2<BR>\n" );
document.write( "Not a zero --> false<BR>\n" );
document.write( "--- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );