document.write( "Question 1067493: solve for X by completeting the sqaure\r
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Algebra.Com's Answer #682661 by ikleyn(53765) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "x^2 + 8x - 4 = 0.\r\n" );
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document.write( "You have these two terms x^2 + 8x . . . \r\n" );
document.write( "So, the thought which comes first to your mind is to get (x+4)^2.\r\n" );
document.write( "To bring it to reality, you need to add 4^2 = 16 and to distract it to keep the balance.\r\n" );
document.write( "Now, see how I do it below:\r\n" );
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document.write( "x^2 + 8x - 4 = 0\r\n" );
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document.write( "is equivalent to\r\n" );
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document.write( "(x^2 + 8x + 16) - 16 - 4 = 0\r\n" );
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document.write( "is equivalent to\r\n" );
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document.write( " - 20 = 0\r\n" );
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document.write( "is equivalent to\r\n" );
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document.write( " = 20\r\n" );
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document.write( "is equivalent to\r\n" );
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document.write( "x+4 = +/- \r\n" );
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document.write( "is equivalent to\r\n" );
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document.write( "x = .\r\n" );
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document.write( "The two roots are  =   and   = .\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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