document.write( "Question 106098: Which number must be added to x^2 - 16x to make it a perfect square trinomial?
\n" ); document.write( " (X squared subtract 16x)
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Algebra.Com's Answer #77191 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "to make \"x%5E2+-+16x+\" to a perfect square trinomial, we need to add number \"64\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2+-+16x+++%2B64=%28x-8%29%5E2\"
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