document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200741>Question 200741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> verify that x=-2 is solution of equation 3(2x+3) - x*x = 2x + 7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150969 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=150969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Normal  method  to  verify  is  to  substitute  answer  into  eqn<BR>\n" );
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document.write( "3(2x+3) -x*x = 2x +7<BR>\n" );
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document.write( "3 [ 2(-2) +3] -(-2)*(-2) = 2(-2) +7<BR>\n" );
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document.write( "3[ -1] -4 = -4+7<BR>\n" );
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document.write( "-3-4=3<BR>\n" );
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document.write( "-7 = 3,,,,not  true,   not  verified<BR>\n" );
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document.write( "lets  just  solve  eqn<BR>\n" );
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document.write( "3(2x+3) -x*x =2x +7<BR>\n" );
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document.write( "6x +9 -x^2 = 2x+7<BR>\n" );
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document.write( "0 = x^2 -4x -2<BR>\n" );
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document.write( "use  quadratic  eqn  to  solve,,,,,a=1,,,,b=-4,,,,,c=-2<BR>\n" );
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document.write( "x = [ -(-4) +/- sqrt{ (-4)^2 -4 (1) (-2)} ] / 2(1)<BR>\n" );
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document.write( "x=[ 4 +/- sq rt { 16 +8} ] /2<BR>\n" );
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document.write( "x= [ 4 +/- sqrt 24]/2<BR>\n" );
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document.write( "x= [ 4 +/- 4.9] /2<BR>\n" );
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document.write( "x= +4.4, -.45<BR>\n" );
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document.write( "to  verify  these<BR>\n" );
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document.write( "x^2 -4x -2 =0<BR>\n" );
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document.write( "(4.4)^2 -4(4.4) -2 =0,,,,,ok<BR>\n" );
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document.write( "(.45)^2 -4(.45) -2 =0,,,,,ok </SPAN>\n" );
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