document.write( "Question 139496: complete the square, and find the roots of the quadratic equation
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\n" ); document.write( "\n" ); document.write( "x2 + 16x = 0
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Algebra.Com's Answer #101699 by stanbon(75887)\"\" \"About 
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x^2 + 16x = 0 \r
\n" ); document.write( "\n" ); document.write( "x^2 + 16x + (16/2)^2 = 0 + (16/2)^2\r
\n" ); document.write( "\n" ); document.write( "x^2 + 16x + 64 = 64\r
\n" ); document.write( "\n" ); document.write( "Factor:\r
\n" ); document.write( "\n" ); document.write( "(x+8)^2 = 64\r
\n" ); document.write( "\n" ); document.write( "Take the square root of both sides:\r
\n" ); document.write( "\n" ); document.write( "x+8 = +8 or x+8 = -8\r
\n" ); document.write( "\n" ); document.write( "x = 0 or x = -16
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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