document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=168381>Question 168381</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321358376/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> How me to solve: Find the value(s)that can replace the variable in the expression and cause the expression to be undefined.  \r<BR>\n" );
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document.write( " 2x-3<BR>\n" );
document.write( "__________<BR>\n" );
document.write( "2x^2 +5x-3\r<BR>\n" );
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document.write( "and\r<BR>\n" );
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document.write( "2x+4<BR>\n" );
document.write( "_____<BR>\n" );
document.write( "x^2 +4<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 #124102 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=124102\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the value(s)that can replace the variable in the expression and cause the expression to be undefined. <BR>\n" );
document.write( "(2x-3)/(2x^2 +5x-3)\r<BR>\n" );
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document.write( "= (2x-3)/[(2x^2 -1)(x + 3)]\r<BR>\n" );
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document.write( "The denominator cannot be zero.<BR>\n" );
document.write( "If 2x^2-1=0, x = +/-sqrt(1/2)<BR>\n" );
document.write( "If x+3 = 0, x = -3<BR>\n" );
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document.write( "Ans: x cannot be +/-sqrt(1/2) or -3<BR>\n" );
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document.write( "and <BR>\n" );
document.write( "(2x+4)/(x^2 + 4)\r<BR>\n" );
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document.write( "No Real Number value of x will make the denominator zero.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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