document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=168672>Question 168672</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve:<BR>\n" );
document.write( "1.(2a-7)(a+9)=0<BR>\n" );
document.write( "2.64x^2-9=0<BR>\n" );
document.write( "3.x(x+3)=18\r<BR>\n" );
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document.write( "factor:<BR>\n" );
document.write( "1.2ab+2ay+bx+xy </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #124312 by </B><A HREF=/tutors/aboutme.mpl?userid=KnightOwlTutor><B>KnightOwlTutor(293)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KnightOwlTutor><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=KnightOwlTutor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=124312\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.(2a-7)(a+9)=0\r<BR>\n" );
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document.write( "The solution to this quadratic equation is a=7/2 or a=-9\r<BR>\n" );
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document.write( "You need to set each factor to equal 0.\r<BR>\n" );
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document.write( "2.64x^2-9=0<BR>\n" );
document.write( "Add 9 to both sides\r<BR>\n" );
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document.write( "Divide both sides by 64\r<BR>\n" );
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document.write( "x^2=9/64\r<BR>\n" );
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document.write( "Take the sq rt of the numerator and denominator \r<BR>\n" );
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document.write( "x=3/8\r<BR>\n" );
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document.write( "3.x(x+3)=18\r<BR>\n" );
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document.write( "Use the distributive property\r<BR>\n" );
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document.write( "x^2+3x=18\r<BR>\n" );
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document.write( "Subtract 18 from both sides\r<BR>\n" );
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document.write( "x^2+3x-18=0\r<BR>\n" );
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document.write( "This equation can be easily factored into\r<BR>\n" );
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document.write( "(x+6)(x-3)=0\r<BR>\n" );
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document.write( "The solutions for this quadratic equation are x=-6 and x=3\r<BR>\n" );
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document.write( "1.2ab+2ay+bx+xy\r<BR>\n" );
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document.write( "2a(b+y)+x(b+y)\r<BR>\n" );
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document.write( "since both terms contain b+y\r<BR>\n" );
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document.write( "you can then redistribute the terms (a+x)(b+y)\r<BR>\n" );
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document.write( "To double check use the FOIL method and see that you have the same equation you started with.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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