document.write( "Question 321782: Identify the numbers that needs to be added to both sides of the equation x^2 - 4x +21 to complete the square.\r
\n" ); document.write( "\n" ); document.write( "a. 6
\n" ); document.write( "b. 3
\n" ); document.write( "c. 4
\n" ); document.write( "d. 21
\n" ); document.write( "

Algebra.Com's Answer #230389 by Alan3354(69443)\"\" \"About 
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Identify the numbers that needs to be added to both sides of the equation x^2 - 4x +21 to complete the square.
\n" ); document.write( "a. 6
\n" ); document.write( "b. 3
\n" ); document.write( "c. 4
\n" ); document.write( "d. 21
\n" ); document.write( "-------------
\n" ); document.write( "1st, it's not an equation, there's no equal sign.
\n" ); document.write( "If you make it = 0, then
\n" ); document.write( "x^2 - 4x +21 = 0
\n" ); document.write( "You have to add -17 to both sides.
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