document.write( "Question 114044: \r
\n" ); document.write( "\n" ); document.write( "7c(8c+7)=3c-15 \n" ); document.write( "

Algebra.Com's Answer #83010 by checkley71(8403) $\"\"$ $\"About$

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7C(8C+7)=3C-15
\n" ); document.write( "56C^2+49C-3C+15=0
\n" ); document.write( "56C^2-46C+15=0
\n" ); document.write( "USING THE QUADRATIC EQUATION:
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$ WE GET:
\n" ); document.write( "C=(46+-SQRT[-46^2-4*56*15])/2*56
\n" ); document.write( "C=(46+-SQRT[2116-3360])/112
\n" ); document.write( "C=(46+-SQRT-1244)/112
\n" ); document.write( "C=(46+-35.37i)/112
\n" ); document.write( "C=46/112+35.37i/112
\n" ); document.write( "C=.41+.3158i ANSWER.
\n" ); document.write( "C=46/112-35.37i/112
\n" ); document.write( "C=.41-.3158i ANSWER.\r
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