document.write( "Question 431928: How do you solve this problem by completing the square?\r
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document.write( "r^2 + 6r - 8 = 0 \n" );
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Algebra.Com's Answer #299608 by nerdybill(7384)![]() ![]() 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 = \n" ); document.write( "r = \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |