document.write( "Question 259381: 7x^2 + 84 = 0 \n" ); document.write( "

Algebra.Com's Answer #190957 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"7x%5E2+%2B+84+=+0\"$
\n" ); document.write( "Divide through by 7
\n" ); document.write( " $\"x%5E2%2B12=0\"$
\n" ); document.write( " $\"x%5E2=-12\"$
\n" ); document.write( " $\"x=%22%22%2B-+sqrt%28-12%29\"$
\n" ); document.write( " $\"x=%22%22%2B-+i%2Asqrt%2812%29\"$
\n" ); document.write( " $\"x=%22%22%2B-+i%2Asqrt%284%2A3%29\"$
\n" ); document.write( " $\"x=%22%22%2B-+i%2Asqrt%284%29%2Asqrt%283%29\"$
\n" ); document.write( " $\"x=%22%22%2B-+i%2A2%2Asqrt%283%29\"$
\n" ); document.write( " $\"x=%22%22%2B-+2%2Asqrt%283%29%2Ai\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );