Algebra.Com's Answer #126427 by Alan3354(69443)  You can put this solution on YOUR website! Use the quadratic formula to solve.. \n" );
document.write( "x^2-4x-1=0 \n" );
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document.write( " Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) | \n" );
document.write( "Quadratic equation (in our case ) has the following solutons: \n" );
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document.write( " For these solutions to exist, the discriminant should not be a negative number. \n" );
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document.write( " First, we need to compute the discriminant : . \n" );
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document.write( " Discriminant d=20 is greater than zero. That means that there are two solutions: . \n" );
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document.write( " Quadratic expression can be factored: \n" );
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document.write( " Again, the answer is: 4.23606797749979, -0.23606797749979.\n" );
document.write( "Here's your graph: \n" );
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document.write( "2 + sqrt(5) \n" );
document.write( "2 - sqrt(5) \n" );
document.write( "IMO, it can't be factored.\r \n" );
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