document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1072205>Question 1072205</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to solve by completeing the square:            ^ :means exponent<BR>\n" );
document.write( "        7x^2 - 14x -56=0 <BR>\n" );
document.write( "I moved 56 to the other side: 7x^2-14x=56<BR>\n" );
document.write( "Then i did (b/2)^2 and got 49 as a third term: 7x^2-14x+49<BR>\n" );
document.write( "I tried to find what added could give me -14 and multiplied could give me 343<BR>\n" );
document.write( "Did i do this wrong? plz help  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #687083 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=687083\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> for complete the square to work, the coefficient of x^2 term must be 1<BR>\n" );
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document.write( "7x^2 - 14x -56 = 0<BR>\n" );
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document.write( "7x^2 -14x = 56<BR>\n" );
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document.write( "divide both sides of = by 7<BR>\n" );
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document.write( "x^2 -2x = 8<BR>\n" );
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document.write( "add 1 to both sides of =<BR>\n" );
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document.write( "x^2 -2x +1 = 8 + 1<BR>\n" );
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document.write( "(x - 1)^2 = 3^2<BR>\n" );
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document.write( "take square root of both sides of =<BR>\n" );
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document.write( "there are two cases<BR>\n" );
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document.write( "1) x - 1 = 3<BR>\n" );
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document.write( "x = 4<BR>\n" );
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document.write( "2) x - 1 = -3<BR>\n" );
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document.write( "x = -2<BR>\n" );
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document.write( "check our answers for x, x = 4 and x = -2<BR>\n" );
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document.write( "7x^2 - 14x -56 = 0<BR>\n" );
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document.write( "7(4)^2 -14(4) -56 = 0<BR>\n" );
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document.write( "112 -56 -56 = 0<BR>\n" );
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document.write( "112 -112 = 0<BR>\n" );
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document.write( "0 = 0<BR>\n" );
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document.write( "7(-2)^2 -14(-2) -56 = 0<BR>\n" );
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document.write( "28 +28 -56 = 0<BR>\n" );
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document.write( "56 - 56 = 0<BR>\n" );
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document.write( "0 = 0<BR>\n" );
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document.write( "our answers check<BR>\n" );
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document.write( ":\r<BR>\n" );
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document.write( " </SPAN>\n" );
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