document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1197455>Question 1197455</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For what values of m is the equation (E)quadratic?<BR>\n" );
document.write( "(E)=(m2-1)x2<BR>\n" );
document.write( "-(m+3)x+4-m2=0 </SPAN>\n" );
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document.write( "The common practice is to use \"^\" (shift-6) when typing an exponent.<br><BR>\n" );
document.write( "I believe your equation is this:<br><BR>\n" );
document.write( "(m^2-1)x^2 - (m+3)x + (4-m^2) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28m%5E2-1%29x%5E2+-+%28m%2B3%29x+%2B+%284-m%5E2%29 ALIGN=MIDDLE  ALT=\"%28m%5E2-1%29x%5E2+-+%28m%2B3%29x+%2B+%284-m%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The equation is quadratic whenever the coefficient of the x^2 term, m^2-1, is non-zero.<br><BR>\n" );
document.write( "m^2-1 is equal to 0 only when x=1 and when x=-1; so the equation is quadratic for all values of x EXCEPT 1 and -1.<br><BR>\n" );
document.write( "ANSWER: all x except 1 and -1<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );