Algebra.Com's Answer #39759 by hayek(51)![\"\"](\"/images/stars/stars-08.gif\")  
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document.write( "Using quadratic formula, taking the positive solution (see below) 
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document.write( " | Solved by pluggable solver: SOLVE quadratic equation with variable | \n" );
document.write( "Quadratic equation  (in our case  ) has the following solutons:
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document.write( " For these solutions to exist, the discriminant  should not be a negative number.
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document.write( " First, we need to compute the discriminant :  .
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document.write( " Discriminant d=841 is greater than zero. That means that there are two solutions:  .
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document.write( " Quadratic expression  can be factored:
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document.write( " Again, the answer is: 4, -25.\n" );
document.write( "Here's your graph:
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