document.write( "Question 112082: Solve the following quadratic equation by completing the square.
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document.write( "2x^2- 8x +5 = 0
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Algebra.Com's Answer #81778 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve the following quadratic equation by completing the square. \n" ); document.write( "2x^2- 8x +5 = 0 \n" ); document.write( "-------------- \n" ); document.write( "2x^2-8x = -5 \n" ); document.write( "2(x^2-4x + ?) = -5 +2*? \n" ); document.write( "2(x^2-4x+4) = -5 +2*4 \n" ); document.write( "2(x-2)^2= 3 \n" ); document.write( "(x-2)^2 = 3/2 \n" ); document.write( "x-2 = sqrt(3/2) or -sqrt(3/2) \n" ); document.write( "x = 2 + (1/2)sqrt(6) or x = 2-(1/2)sqrt(6) \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |