document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=81001>Question 81001</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this?\r<BR>\n" );
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document.write( "(x+4)^2=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #58098 by </B><A HREF=/tutors/aboutme.mpl?userid=praseenakos@yahoo.com><B>praseenakos@yahoo.com(507)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=praseenakos@yahoo.com><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=praseenakos@yahoo.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=58098\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> QUESTION:\r<BR>\n" );
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document.write( "Solve,\r<BR>\n" );
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document.write( "(x+4)^2=4\r<BR>\n" );
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document.write( "ANSWER:\r<BR>\n" );
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document.write( "At first expand the expression using the identity (a+ b)^2 = a^2 + 2ab + b^2 as follows............\r<BR>\n" );
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document.write( "==> (x+4)^2=4\r<BR>\n" );
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document.write( "==> x^2 + 8x + 16 = 4\r<BR>\n" );
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document.write( "subtract 4 from both sides of this expression \r<BR>\n" );
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document.write( "==> x^2 + 8x + 16 - 4 = 4 - 4\r<BR>\n" );
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document.write( "==> x^2 + 8x + 12 = 0\r<BR>\n" );
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document.write( "this is in the form of a quadratic equation. we can solve this equation using quadratic formula.\r<BR>\n" );
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document.write( "Comaparing this equation with the stadard equation, ax^2 + bx + c =0, we have,\r<BR>\n" );
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document.write( "a = 1, b = 8 and c = 12\r<BR>\n" );
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document.write( "then the solution is given by,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-8+%2B-+sqrt%28+8%5E2-4%2A1%2A12+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-8+%2B-+sqrt%28+8%5E2-4%2A1%2A12+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-8+%2B-+sqrt%28+64-48%29%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-8+%2B-+sqrt%28+64-48%29%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==>  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-8+%2B-+sqrt+%2816%29%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-8+%2B-+sqrt+%2816%29%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-8+%2B-+4+%29%2F%282%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-8+%2B-+4+%29%2F%282%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==> x = (-8 + 4)/2   or x = ( -8-4)/2\r<BR>\n" );
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document.write( "==> x = -4/2   or x = -12/2\r<BR>\n" );
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document.write( "==> x = -2 or x = -6\r<BR>\n" );
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document.write( "Hence the solution is x = -2 or -6\r<BR>\n" );
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document.write( "To check the solution, plugg any of these values in the given equation......then you can see that it satisfy the given equation\r<BR>\n" );
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document.write( "Hope you found this explanation useful.\r<BR>\n" );
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document.write( "Regards.\r<BR>\n" );
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document.write( "Praseena.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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