document.write( "Question 1127460: If f(x) = x^2 − 4x − 17and f(c) = 4,find c. (Enter your answers as a comma-separated list.) \n" ); document.write( "

Algebra.Com's Answer #743875 by josgarithmetic(39617) $\"\"$ $\"About$

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\n" ); document.write( "If f(x) = x^2 − 4x − 17and f(c) = 4,find c.
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\n" ); document.write( "\n" ); document.write( " $\"c%5E2-4c-17=4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"c%5E2-4c-17-4=0\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"c%5E2-4c-21=0\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28c-7%29%28c%2B3%29=0\"$ \r
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\n" ); document.write( "\n" ); document.write( "c may be -3, or +7. \n" ); document.write( "

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