document.write( "Question 532007: Please!! I need help to solve by completing the square:\r
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document.write( "2x^2 -9x + 4 = 0\r
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document.write( "and
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document.write( "4 x^2 + x = 0\r
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document.write( "Thank you so much for your help!! \n" );
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Algebra.Com's Answer #350653 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Please!! I need help to solve by completing the square: \n" ); document.write( "2x^2 -9x + 4 = 0 \n" ); document.write( "x^2 -(9/2)x = -2 \n" ); document.write( "x^2 -(9/2)x + (9/4)^2 = -2 + (9/4)^2 \n" ); document.write( "--- \n" ); document.write( "(x-(9/4))^2 = -32/16 + 81/16 \n" ); document.write( "--- \n" ); document.write( "(x-(9/4))^2 = 49/16 \n" ); document.write( "--- \n" ); document.write( "x-(9/4) = +-7/4 \n" ); document.write( "=== \n" ); document.write( "x = +(7/4)+(9/4) or x = -(7/4)+(9/4) \n" ); document.write( "---- \n" ); document.write( "x = 4 or x = 1/2 \n" ); document.write( "========================== \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( "4 x^2 + x = 0 \n" ); document.write( "x^2 + (1/4)x = 0 \n" ); document.write( "x^2 + (1/4)x + (1/8)^2 = (1/8)^2 \n" ); document.write( "(x+(1/8))^2 = (1/8)^2 \n" ); document.write( "(x + (1/8)) = +-(1/8) \n" ); document.write( "x = (1/8)-(1/8) or x = -(1/8)-(1/8) \n" ); document.write( "x = 0 or x = -1/4 \n" ); document.write( "===================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================= \n" ); document.write( " \n" ); document.write( " |