document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=52219>Question 52219</A>: <I><SPAN STYLE=\"word-break: break-all;\"> here are 2 expressions:-<BR>\n" );
document.write( "a: x^2 + x - 3<BR>\n" );
document.write( "b: y^3 - 2y + 6<BR>\n" );
document.write( "substitute in these numbers to evaluate the expressions<BR>\n" );
document.write( "3,  -3,  0.5,  0.35 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #34788 by </B><A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><B>AnlytcPhil(1810)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=AnlytcPhil><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=AnlytcPhil><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=34788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\"><font size = 5><b>\r\n" );
document.write( "here are 2 expressions:-\r\n" );
document.write( "a: x^2 + x - 3\r\n" );
document.write( "b: y^3 - 2y + 6\r\n" );
document.write( "substitute in these numbers to evaluate\r\n" );
document.write( "the expressions\r\n" );
document.write( "3, -3, 0.5, 0.35\r\n" );
document.write( "\r\n" );
document.write( "a: \r\n" );
document.write( "\r\n" );
document.write( "1.             x² + x - 3\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see an x there, replace \r\n" );
document.write( "it by (-3) \r\n" );
document.write( "\r\n" );
document.write( "         (-3)² + (-3) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now (-3)² means to multiply (-3) times \r\n" );
document.write( "(-3). That gives +9, so replace the \r\n" );
document.write( "(-3)² by 9\r\n" );
document.write( "      \r\n" );
document.write( "             9 + (-3) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now 9 + (-3) gives +6 so replace the \r\n" );
document.write( "\"9 + (-3)\" by 6\r\n" );
document.write( "\r\n" );
document.write( "                    6 - 3\r\n" );
document.write( "\r\n" );
document.write( "Now replace 6 - 3 by 3, and that's the \r\n" );
document.write( "answer,\r\n" );
document.write( "\r\n" );
document.write( "                        3\r\n" );
document.write( "\r\n" );
document.write( "----------------------------------------------\r\n" );
document.write( "\r\n" );
document.write( "2.                 x² + x - 3\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see an x there, replace \r\n" );
document.write( "it by (0.5) \r\n" );
document.write( "\r\n" );
document.write( "         (0.5)² + (0.5) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now (0.5)² means to multiply (0.5) times\r\n" );
document.write( "(0.5). That gives +0.25, so replace the \r\n" );
document.write( "(0.5)² by 0.25\r\n" );
document.write( "      \r\n" );
document.write( "             0.25 + (0.5) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now 0.25 + (0.5) gives +0.75 so replace \r\n" );
document.write( "the \"0.25 + (0.5)\" by 0.75\r\n" );
document.write( "\r\n" );
document.write( "                    0.75 - 3\r\n" );
document.write( "\r\n" );
document.write( "Now replace 0.75 - 3 by -2.25, and that's \r\n" );
document.write( "the answer,\r\n" );
document.write( "\r\n" );
document.write( "                        -2.25\r\n" );
document.write( "\r\n" );
document.write( "----------------------------------------------------\r\n" );
document.write( "\r\n" );
document.write( "3.                 x² + x - 3\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see an x there, replace it \r\n" );
document.write( "by (0.35) \r\n" );
document.write( "\r\n" );
document.write( "         (0.35)² + (0.35) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now (0.35)² means to multiply (0.35) times\r\n" );
document.write( "(0.35). That gives +0.1225, so replace the \r\n" );
document.write( "(0.35)² by 0.1225\r\n" );
document.write( "      \r\n" );
document.write( "             0.1225 + (0.35) - 3\r\n" );
document.write( "\r\n" );
document.write( "Now 0.1225 + (0.35) gives +0.4725 so replace \r\n" );
document.write( "the \"0.1225 + (0.35)\" by 0.4725\r\n" );
document.write( "\r\n" );
document.write( "                    0.4725 - 3\r\n" );
document.write( "\r\n" );
document.write( "Now replace 0.4725 - 3 by -2.5275, and that's \r\n" );
document.write( "the answer,\r\n" );
document.write( "\r\n" );
document.write( "                        -2.5275\r\n" );
document.write( "\r\n" );
document.write( "========================================================\r\n" );
document.write( "\r\n" );
document.write( "b: \r\n" );
document.write( "\r\n" );
document.write( "1.              y³ - 2y + 6\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see a y there, replace it by \r\n" );
document.write( "(-3) \r\n" );
document.write( "\r\n" );
document.write( "         (-3)³ - 2(-3) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now (-3)³ means to multiply (-3) times (-3) \r\n" );
document.write( "times (-3). That gives\r\n" );
document.write( "-27, so replace the (-3)³ by -27\r\n" );
document.write( "      \r\n" );
document.write( "           -27 - 2(-3) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now - 2(-3) gives + 6 so replace \" - 2(-3) \" \r\n" );
document.write( "by \"+ 6\"\r\n" );
document.write( "\r\n" );
document.write( "               -27 + 6 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now -27 + 6 gives -21 so replace the \r\n" );
document.write( "\"-27 + 6\" by -21\r\n" );
document.write( "\r\n" );
document.write( "                   -21 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now replace -21 + 6 by -15, and that's \r\n" );
document.write( "the answer,\r\n" );
document.write( "\r\n" );
document.write( "                       -15\r\n" );
document.write( "\r\n" );
document.write( "----------------------------------------------\r\n" );
document.write( "\r\n" );
document.write( "2.                \r\n" );
document.write( "                  y³ - 2y + 6\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see a y there, replace it \r\n" );
document.write( "by (0.5) \r\n" );
document.write( "\r\n" );
document.write( "           (0.5)³ - 2(0.5) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now (0.5)³ means to multiply \r\n" );
document.write( "(0.5) times (0.5) times (0.5). That gives\r\n" );
document.write( "+0.125, so replace the (0.5)³ by 0.125\r\n" );
document.write( "      \r\n" );
document.write( "             0.125 - 2(0.5) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now - 2(0.5) equals - 1 so replace the \r\n" );
document.write( "\" - 2(0.5) \" by \" - 1 \" \r\n" );
document.write( "\r\n" );
document.write( "               0.125 - 1 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now 0.125 - 1 gives -0.875 so replace the \r\n" );
document.write( "\"0.125 - 1\" by -0.875\r\n" );
document.write( "\r\n" );
document.write( "                    -0.875 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now replace -0.875 + 6 by 5.125, and that's \r\n" );
document.write( "the answer,\r\n" );
document.write( "\r\n" );
document.write( "                        5.125\r\n" );
document.write( "\r\n" );
document.write( "----------------------------------------------------\r\n" );
document.write( "\r\n" );
document.write( "3.                    y³ - 2y + 6\r\n" );
document.write( "\r\n" );
document.write( "Everywhere you see an y there, replace it \r\n" );
document.write( "by (0.35) \r\n" );
document.write( "\r\n" );
document.write( "         (0.35)³ - 2(0.35) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now (0.35)³ means to multiply (0.35) times \r\n" );
document.write( "(0.35) times (0.35). That gives\r\n" );
document.write( "+0.042875, so replace the \r\n" );
document.write( "(0.35)³ by 0.042875\r\n" );
document.write( "      \r\n" );
document.write( "             0.042875 - 2(0.35) + 6\r\n" );
document.write( "\r\n" );
document.write( "Now - 2(0.35) gives - 0.7 so replace the\r\n" );
document.write( "- 2(0.35) by -0.7\r\n" );
document.write( "\r\n" );
document.write( "                 0.042875 - 0.7 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now 0.042875 - 0.7 gives -0.657125 so replace \r\n" );
document.write( "the \"0.042875 - 0.7\" by -0.657125\r\n" );
document.write( "\r\n" );
document.write( "                  -0.657125 + 6\r\n" );
document.write( "\r\n" );
document.write( "Now replace -0.657125 + 6 by 5.342875, and \r\n" );
document.write( "that's the answer,\r\n" );
document.write( "\r\n" );
document.write( "                        5.342875\r\n" );
document.write( "\r\n" );
document.write( "Edwin</PRE>     </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );