document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=92220>Question 92220</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the quotient when x^4 - 4x^2 + 7x +15 is divided by x+4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #67111 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=67111\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Start with the given polynomial <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E4+-+4x%5E2+%2B+7x+%2B+15%29%2F%28x%2B4%29 ALIGN=MIDDLE  ALT=\"%28x%5E4+-+4x%5E2+%2B+7x+%2B+15%29%2F%28x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "First lets find our test zero:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B4=0 ALIGN=MIDDLE  ALT=\"x%2B4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Set the denominator <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B4 ALIGN=MIDDLE  ALT=\"x%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" > equal to zero\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-4 ALIGN=MIDDLE  ALT=\"x=-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Solve for x.\r<BR>\n" );
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document.write( "so our test zero is -4\r<BR>\n" );
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document.write( "Now set up the synthetic division table by placing the test zero in the upper left corner and placing the coefficients of the numerator to the right of the test zero.(note: remember if a polynomial goes from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1x%5E4 ALIGN=MIDDLE  ALT=\"1x%5E4\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4x%5E2 ALIGN=MIDDLE  ALT=\"-4x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > there is a zero coefficient for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E3 ALIGN=MIDDLE  ALT=\"x%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" >. This is simply because <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4+-+4x%5E2+%2B+7x+%2B+15 ALIGN=MIDDLE  ALT=\"x%5E4+-+4x%5E2+%2B+7x+%2B+15\"   DISABLED_style= \"max-width:90%; height:auto;\" > really looks like <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1x%5E4%2B0x%5E3%2B-4x%5E2%2B7x%5E1%2B15x%5E0 ALIGN=MIDDLE  ALT=\"1x%5E4%2B0x%5E3%2B-4x%5E2%2B7x%5E1%2B15x%5E0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><TABLE  cellpadding=10>\n" );
document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "Start by bringing down the leading coefficient (it is the coefficient with the highest exponent which is 1)\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Multiply -4 by 1 and place the product (which is -4)  right underneath the second  coefficient (which is 0)\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Add -4 and 0 to get -4. Place the sum right underneath -4.\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD ></TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD ></TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Multiply -4 by -4 and place the product (which is 16)  right underneath the third  coefficient (which is -4)\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD ></TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Add 16 and -4 to get 12. Place the sum right underneath 16.\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD ></TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD >12</TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Multiply -4 by 12 and place the product (which is -48)  right underneath the fourth  coefficient (which is 7)\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD >-48</TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD >12</TD><TD ></TD><TD ></TD></TR>\n" );
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document.write( "    Add -48 and 7 to get -41. Place the sum right underneath -48.\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD >-48</TD><TD ></TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD >12</TD><TD >-41</TD><TD ></TD></TR>\n" );
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document.write( "    Multiply -4 by -41 and place the product (which is 164)  right underneath the fifth  coefficient (which is 15)\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD >-48</TD><TD >164</TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD >12</TD><TD >-41</TD><TD ></TD></TR>\n" );
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document.write( "    Add 164 and 15 to get 179. Place the sum right underneath 164.\r<BR>\n" );
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document.write( "<TR><TD >-4</TD><TD >|</TD><TD >1</TD><TD >0</TD><TD >-4</TD><TD >7</TD><TD >15</TD></TR><TR><TD ></TD><TD >|</TD><TD ></TD><TD >-4</TD><TD >16</TD><TD >-48</TD><TD >164</TD><TD ></TD></TR><TR><TD ></TD><TD ></TD><TD >1</TD><TD >-4</TD><TD >12</TD><TD >-41</TD><TD >179</TD></TR>\n" );
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document.write( "Since the last column adds to 179, we have a remainder of 179. This means <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B4 ALIGN=MIDDLE  ALT=\"x%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" > is <b>not</b> a factor of  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4+-+4x%5E2+%2B+7x+%2B+15 ALIGN=MIDDLE  ALT=\"x%5E4+-+4x%5E2+%2B+7x+%2B+15\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now lets look at the bottom row of coefficients:\r<BR>\n" );
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document.write( "The first 4 coefficients (1,-4,12,-41) form the quotient\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E3+-+4x%5E2+%2B+12x+-+41 ALIGN=MIDDLE  ALT=\"x%5E3+-+4x%5E2+%2B+12x+-+41\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "and the last coefficient 179, is the remainder, which is placed over <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B4 ALIGN=MIDDLE  ALT=\"x%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" > like this\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=179%2F%28x%2B4%29 ALIGN=MIDDLE  ALT=\"179%2F%28x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Putting this altogether, we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E3+-+4x%5E2+%2B+12x+-+41%2B179%2F%28x%2B4%29 ALIGN=MIDDLE  ALT=\"x%5E3+-+4x%5E2+%2B+12x+-+41%2B179%2F%28x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E4+-+4x%5E2+%2B+7x+%2B+15%29%2F%28x%2B4%29=x%5E3+-+4x%5E2+%2B+12x+-+41%2B179%2F%28x%2B4%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "which looks like this in remainder form:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E4+-+4x%5E2+%2B+7x+%2B+15%29%2F%28x%2B4%29=x%5E3+-+4x%5E2+%2B+12x+-+41 ALIGN=MIDDLE  ALT=\"%28x%5E4+-+4x%5E2+%2B+7x+%2B+15%29%2F%28x%2B4%29=x%5E3+-+4x%5E2+%2B+12x+-+41\"   DISABLED_style= \"max-width:90%; height:auto;\" > remainder 179\r<BR>\n" );
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document.write( "You can use this <a  rel=nofollow HREF=http://calc101.com/webMathematica/long-divide.jsp>online polynomial division calculator</a> to check your work\r<BR>\n" );
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