document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=203970>Question 203970</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve:<BR>\n" );
document.write( "(x+4)(x-9)=0 </SPAN>\n" );
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document.write( "(x+4)(x-9)=0<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Since the product is zero, one of those <BR>\n" );
document.write( "factors must be zero.<BR>\n" );
document.write( "x+4 = 0 or x-9 = 0<BR>\n" );
document.write( "x = -4 or x = 9<BR>\n" );
document.write( "======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );