document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=89066>Question 89066</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve:\r<BR>\n" );
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document.write( "(x+2)^2=12 </SPAN>\n" );
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document.write( "     solve:\r<BR>\n" );
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document.write( "(x+2)^2=12\r<BR>\n" );
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document.write( "            (x+2)^2 = 12<BR>\n" );
document.write( "             x^2+4x+4-12 = 0<BR>\n" );
document.write( "              x^2+4x-8  = 0<BR>\n" );
document.write( "           use the formula   x = -b+-sq rt b^2-4ac/2a<BR>\n" );
document.write( "           where a =1  b = 4  c= -8\r<BR>\n" );
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document.write( "       substitute  the values of a,b&c\r<BR>\n" );
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document.write( "              x = -4+-sq rt 4^2-4.1.(-8)/2.1\r<BR>\n" );
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document.write( "                = -4+-sq rt 16+32/2<BR>\n" );
document.write( "                = -4+sq rt 48/2<BR>\n" );
document.write( "                = -4+-4sq rt3/2<BR>\n" );
document.write( "                = 2(-2+-sq rt3)/2<BR>\n" );
document.write( "                = -2+-sq rt3 </SPAN>\n" );
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