document.write( "Question 690010: 12d^2+38d+30=0 \n" ); document.write( "
Algebra.Com's Answer #426120 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Use the quadratic formula to solve for d\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-%2838%29%2B-sqrt%28%2838%29%5E2-4%2812%29%2830%29%29%29%2F%282%2812%29%29\" Plug in \"a+=+12\", \"b+=+38\", \"c+=+30\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-38%2B-sqrt%281444-%281440%29%29%29%2F%2824%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-38%2B-sqrt%284%29%29%2F24\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-38%2Bsqrt%284%29%29%2F24\" or \"d+=+%28-38-sqrt%284%29%29%2F24\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+%28-38%2B2%29%2F24\" or \"d+=+%28-38-2%29%2F24\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+-36%2F24\" or \"d+=+-40%2F24\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"d+=+-3%2F2\" or \"d+=+-5%2F3\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the two solutions are \"d+=+-3%2F2\" or \"d+=+-5%2F3\"
\n" ); document.write( "
\n" );