document.write( "Question 692927: What number must be added to x2 – 9x to complete the square? \n" ); document.write( "

Algebra.Com's Answer #427152 by jim_thompson5910(35256) $\"\"$ $\"About$

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Take half of -9 to get -9/2. Then square this to get the answer of $\"81%2F4\"$ \n" ); document.write( "

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