document.write( "Question 80825: Can someone please check this for me?
\n" ); document.write( "solve by using the quadratic formula
\n" ); document.write( "x^2=5x+8
\n" ); document.write( "x^2=25+8
\n" ); document.write( "=-5+-sqrt33/2 \n" ); document.write( "

Algebra.Com's Answer #57996 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve for x:
\n" ); document.write( " $\"x%5E2+=+5x%2B8\"$
\n" ); document.write( "First, get your equation into the standard form for quadratic equations: $\"ax%5E2%2Bbx%2Bc+=+0\"$ by subtracting 5x from both sides then subtracting 8 from both sides.
\n" ); document.write( " $\"x%5E2-5x-8+=+0\"$ Compare this with the standard form and you can see that, in your equation, a = 1, b = -5, and c = -8. Now apply the quadratic formula: $\"x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"$ to your equation.
\n" ); document.write( " $\"x+=+%28-%28-5%29%2B-sqrt%28%28-5%29%5E2-4%281%29%28-8%29%29%29%2F2%281%29\"$ Simplify this.
\n" ); document.write( " $\"x+=+%285%2B-sqrt%2825%2B32%29%29%2F2\"$
\n" ); document.write( " $\"x+=+%285%2B-sqrt%2857%29%29%2F2\"$
\n" ); document.write( "The solutions are:
\n" ); document.write( " $\"x+=+%285%2Bsqrt%2857%29%29%2F2\"$ or $\"x+=+%285-sqrt%2857%29%29%2F2\"$ \n" ); document.write( "

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