document.write( "Question 195418: solve by completing the square\r
\n" ); document.write( "\n" ); document.write( "7x^2-2x-9=0
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Algebra.Com's Answer #146548 by nerdybill(7384)\"\" \"About 
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7x^2-2x-9=0
\n" ); document.write( "7x^2-2x = 9
\n" ); document.write( "7(x^2 -(2/7)x ) = 9
\n" ); document.write( "7(x^2 -(2/7)x + __ ) = 9
\n" ); document.write( "7(x^2 -(2/7)x + 1/49 ) = 9 + 7(1/49)
\n" ); document.write( "7(x^2 -(2/7)x + 1/49 ) = 441/49 + 7/49
\n" ); document.write( "7(x - 1/7)^2 = 448/49
\n" ); document.write( "(x - 1/7)^2 = 64/49
\n" ); document.write( "x - 1/7 = 8/7
\n" ); document.write( "x = 9/7
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