document.write( "Question 526675: Solve each equation by using the quadratic formula.
\n" ); document.write( "-9d-3d^2=5 \n" ); document.write( "
Algebra.Com's Answer #348626 by oberobic(2304)\"\" \"About 
You can put this solution on YOUR website!
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Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation \"ad%5E2%2Bbd%2Bc=0\" (in our case \"-3d%5E2%2B-9d%2B-5+=+0\") has the following solutons:
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\n" ); document.write( " \"d%5B12%5D+=+%28b%2B-sqrt%28+b%5E2-4ac+%29%29%2F2%5Ca\"
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\n" ); document.write( " For these solutions to exist, the discriminant \"b%5E2-4ac\" should not be a negative number.
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\n" ); document.write( " First, we need to compute the discriminant \"b%5E2-4ac\": \"b%5E2-4ac=%28-9%29%5E2-4%2A-3%2A-5=21\".
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\n" ); document.write( " Discriminant d=21 is greater than zero. That means that there are two solutions: \"+x%5B12%5D+=+%28--9%2B-sqrt%28+21+%29%29%2F2%5Ca\".
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\n" ); document.write( " \"d%5B1%5D+=+%28-%28-9%29%2Bsqrt%28+21+%29%29%2F2%5C-3+=+-2.26376261582597\"
\n" ); document.write( " \"d%5B2%5D+=+%28-%28-9%29-sqrt%28+21+%29%29%2F2%5C-3+=+-0.736237384174027\"
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\n" ); document.write( " Quadratic expression \"-3d%5E2%2B-9d%2B-5\" can be factored:
\n" ); document.write( " \"-3d%5E2%2B-9d%2B-5+=+-3%28d--2.26376261582597%29%2A%28d--0.736237384174027%29\"
\n" ); document.write( " Again, the answer is: -2.26376261582597, -0.736237384174027.\n" ); document.write( "Here's your graph:
\n" ); document.write( "\"graph%28+500%2C+500%2C+-10%2C+10%2C+-20%2C+20%2C+-3%2Ax%5E2%2B-9%2Ax%2B-5+%29\"
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