document.write( "Question 46159: My question is relating to 5x=-4x^2-2\r
\n" ); document.write( "\n" ); document.write( "I know I use the qadratic equation of x= -b+- b^2-4ac/2a. I can't put the square root sign in the fornula.\r
\n" ); document.write( "\n" ); document.write( "anyways, near the end I have a - on the top and bottom. do i only use the (i) on the top, or both?
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Algebra.Com's Answer #30623 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Let's see.
\n" ); document.write( "Solve:
\n" ); document.write( "\"5x+=+-4x%5E2-2\" Rewrite in standard form.
\n" ); document.write( "\"4x%5E2%2B5x%2B2+=+0\" You are correct in using the quadratic formula because this does not factor. Here, a = 4, b = 5, and c = 2\r
\n" ); document.write( "\n" ); document.write( "\"x=%28-5%2B-sqrt%285%5E2-4%284%29%282%29%29%29%2F2%284%29\"
\n" ); document.write( "\"x=%28-5%2B-sqrt%2825-32%29%29%2F8\"
\n" ); document.write( "\"x=%28-5%2B-sqrt%28-7%29%29%2F8\"\r
\n" ); document.write( "\n" ); document.write( "The roots are:\r
\n" ); document.write( "\n" ); document.write( "\"x+=+-5%2F8%2B%28sqrt%287%29i%29%2F8\"
\n" ); document.write( "\"x+=+-5%2F8-%28sqrt%287%29i%29%2F8\"
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