document.write( "Question 252957: What is the solution of the quadratic equation..x square+6x-3=0
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Algebra.Com's Answer #185165 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Besides the quadratic formula we can complete the square \n" ); document.write( "x^2+6x-3=0 \n" ); document.write( "x^2+6x=3 \n" ); document.write( "take half of 6 \n" ); document.write( "6/2=3 \n" ); document.write( "and square it \n" ); document.write( "3^2=9 \n" ); document.write( "add 9 to both sides \n" ); document.write( "x^2+6x+9=12 \n" ); document.write( "(x+3)^2=12 \n" ); document.write( "x+3=+\-sqrt(12) \n" ); document.write( "x=-3+sqrt(12) \n" ); document.write( "x=-3-sqrt(12)\r \n" ); document.write( "\n" ); document.write( "x=-3+2sqrt(3) \n" ); document.write( "x=-3-2sqrt(3) \n" ); document.write( " \n" ); document.write( " |