document.write( "Question 1009335: What must be added to x2^-7x to make it a perfect square? \n" ); document.write( "
Algebra.Com's Answer #624850 by fractalier(6550)\"\" \"About 
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You take half the x-term coefficient and square it...thus from
\n" ); document.write( "x^2 - 7x, we take half of -7 and get -3.5, then square it and get
\n" ); document.write( "12.25
\n" ); document.write( "so that x^2 - 7x + 12.25 = (x - 3.5)^2
\n" ); document.write( "a perfect square...
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