document.write( "Question 431928: How do you solve this problem by completing the square?\r
\n" ); document.write( "\n" ); document.write( "r^2 + 6r - 8 = 0
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Algebra.Com's Answer #299608 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
r^2 + 6r - 8 = 0
\n" ); document.write( "r^2 + 6r = 8
\n" ); document.write( "take 1/2 of 6, square the result and add to both sides:
\n" ); document.write( "r^2 + 6r + 9 = 8 + 9
\n" ); document.write( "r^2 + 6r + 9 = 17
\n" ); document.write( "(r+3)(r+3) = 17
\n" ); document.write( "(r+3)^2 = 17
\n" ); document.write( "r+3 = \"sqrt%2817%29\"
\n" ); document.write( "r = \"sqrt%2817%29+-+3\"\r
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