document.write( "Question 259932: what quantity should be added to both sides of this equation to complete the square?\r
\n" ); document.write( "\n" ); document.write( "x(2)-8x=5
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Algebra.Com's Answer #191385 by richwmiller(17219)\"\" \"About 
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x^2-8x=5
\n" ); document.write( "take 1/2 of the coefficient of x
\n" ); document.write( "8/2=4 and square it
\n" ); document.write( "4^2=16
\n" ); document.write( "add 16 to complete the square
\n" ); document.write( "x^2-8x+16=21
\n" ); document.write( "(x-4)^2=21
\n" ); document.write( "|x-4|=+\-21
\n" ); document.write( "x-4=21
\n" ); document.write( "x=25
\n" ); document.write( "x-4=-21
\n" ); document.write( "x=-17
\n" ); document.write( "x=25
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