document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=370623>Question 370623</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A common student error when solving a quadratic equation is simplifying incorrectly. Consider the following INCORRECT solution:\r<BR>\n" );
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document.write( "2+/- the square root of 7 divided by  2 <BR>\n" );
document.write( "= <BR>\n" );
document.write( "1+/- square root of 7\r<BR>\n" );
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document.write( "Explain why x= 1+-sqrt7 is the incorrect solution.\r<BR>\n" );
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document.write( "Is this not able to be factored any further from 2+-sqrt7/2 because the whole numerator needs divided by 2? <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 #264191 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=264191\">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=x=%28+2%2Bsqrt%287%29%29%2F2 ALIGN=MIDDLE  ALT=\"x=%28+2%2Bsqrt%287%29%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "you have youself answered the question.As you see above <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282%2Bsqrt%287%29%29 ALIGN=MIDDLE  ALT=\"%282%2Bsqrt%287%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "is in the numerator<BR>\n" );
document.write( "when you simplify each term in the numerator has to be divided by 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28%282%2F2%29%2B%28sqrt%287%29%29%2F2%29%29 ALIGN=MIDDLE  ALT=\"x=%28%282%2F2%29%2B%28sqrt%287%29%29%2F2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%281%2B%28sqrt%287%29%29%2F2%29 ALIGN=MIDDLE  ALT=\"x=%281%2B%28sqrt%287%29%29%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "if you need to simplify further you have to use a calculator to write the answer in decimals.<BR>\n" );
document.write( "x= 1+3.228<BR>\n" );
document.write( "x= 4.228<BR>\n" );
document.write( "..<BR>\n" );
document.write( "the same applies for the other root.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca<BR>\n" );
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