document.write( "Question 1209147: Solve for c in (c - 7)^2 = 81 + 20c. \n" ); document.write( "
Algebra.Com's Answer #847739 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
\"c%5E2-14c%2B49=20c%2B81\"\r
\n" ); document.write( "\n" ); document.write( "\"c%5E2-34c-32=0\"\r
\n" ); document.write( "\n" ); document.write( "discriminant, \"%28-34%29%5E2-4%2A1%2A%28-32%29=1156%2B128=1284\"
\n" ); document.write( "\"6%2A214=2%2A6%2A107=2%2A2%2A3%2A107\", solving for c by factorization not useful
\n" ); document.write( "because discriminant not a perfect square.\r
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\n" ); document.write( "\n" ); document.write( "\"c=%2834%2B-+sqrt%282%2A2%2A3%2A107%29%29%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28c=17%2B-+sqrt%28321%29%29\"
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