document.write( "Question 136276: Please help me solve this using the quadratic formula:\r
\n" ); document.write( "\n" ); document.write( "2x^2+x=21 \n" ); document.write( "
Algebra.Com's Answer #99833 by checkley77(12844)\"\" \"About 
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2x^2+x=21
\n" ); document.write( "2x^2+x-21=0
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "x=(-1+-sqrt(1^2-4*2*-21])/2*2
\n" ); document.write( "x=(-1+-sqrt[1+168])/4
\n" ); document.write( "x=(-1+-sqrt169)/4
\n" ); document.write( "x=(-1+-13)/4
\n" ); document.write( "x=(-1+13/4
\n" ); document.write( "x=12/4
\n" ); document.write( "x=3 answer.
\n" ); document.write( "x=(-1-13)/4
\n" ); document.write( "x=(-14)/4
\n" ); document.write( "x=-3.5 answer.\r
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