document.write( "Question 428278: Solve each quadratic equation by completing the square.\r
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document.write( "1.X^2+4x+2=0\r
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document.write( "2.X^2+8x=1\r
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document.write( "3.X^2+2=6x+4 \n" );
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Algebra.Com's Answer #297724 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve each quadratic equation by completing the square. \n" ); document.write( "1.X^2+4x+2=0 \n" ); document.write( "x^2+4x+? = -2+? \n" ); document.write( "x^2+4x+4 = -2+4 \n" ); document.write( "(x+2)^2 = 2 \n" ); document.write( "--- \n" ); document.write( "x+2 = sqrt(2) or x+2 = -sqrt(2) \n" ); document.write( "x = -2+sqrt(2) or x = -2-sqrt(2) \n" ); document.write( "---------------------------------------\r \n" ); document.write( "\n" ); document.write( "2.X^2+8x=1 \n" ); document.write( "x^2+8x+? = -1+? \n" ); document.write( "x^2+8x+16 = -1+16 \n" ); document.write( "(x+4)^2 = 15 \n" ); document.write( "x+4 = sqrt(15) or x+4 = -sqrt(15) \n" ); document.write( "--- \n" ); document.write( "x = -4+sqrt(15) or x = -4-sqrt(15) \n" ); document.write( "------------------------------------------- \n" ); document.write( "3.X^2+2=6x+4 \n" ); document.write( "x^2-6x = 2 \n" ); document.write( "x^2-6x+? = 2+? \n" ); document.write( "x^2-6x+9 = 2+9 \n" ); document.write( "(x-3)^2 = 11 \n" ); document.write( "x-3 = sqrt(11) or x-3 = -sqrt(11) \n" ); document.write( "x = 3+sqrt(11) or x = 3-sqrt(11) \n" ); document.write( "================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============ \n" ); document.write( " \n" ); document.write( " |