document.write( "Question 80808: can some one check this for me please?\r
\n" ); document.write( "\n" ); document.write( "solve by using quadratic formula\r
\n" ); document.write( "\n" ); document.write( "5x^2+x+7=0
\n" ); document.write( "x=_+sqrt-2^2-5*5*7/2*5
\n" ); document.write( "(2)+sqrt(-4)5(7)/2(5)
\n" ); document.write( "2+16-49/2
\n" ); document.write( "2+sqrt33/2 \n" ); document.write( "

Algebra.Com's Answer #57966 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve for x:
\n" ); document.write( " $\"5x%5E2%2Bx%2B7+=+0\"$ Apply the quadratic formula: $\"x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"$
\n" ); document.write( " $\"x+=+%28-1%2B-sqrt%281%5E2-4%285%29%287%29%29%29%2F2%285%29\"$ Simplify.
\n" ); document.write( " $\"x+=+%28-1%2B-sqrt%281-140%29%29%2F10\"$
\n" ); document.write( " $\"x+=+%28-1%2B-sqrt%28-139%29%29%2F10\"$
\n" ); document.write( "The solutions are the \"complex\" numbers:
\n" ); document.write( " $\"x+=+%28%28-1+%2B+sqrt%28139%29i%29%29%2F10\"$ and
\n" ); document.write( " $\"x+=+%28%28-1+-+sqrt%28139%29i%29%29%2F10\"$ \r
\n" ); document.write( "\n" ); document.write( "If you need the approximate solutions:
\n" ); document.write( " $\"x+=+-0.1%2B%281.1790%29i\"$ and
\n" ); document.write( " $\"x+=+-0.1-%281.1790%29i\"$ to the nearest ten thousandth. \n" ); document.write( "

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