document.write( "Question 1085962: For what real values of c is 9x^2 + 16x + c the square of a binomial? If you find more than one, then list your values in increasing order, separated by commas. \n" ); document.write( "

Algebra.Com's Answer #700063 by josgarithmetic(39617) $\"\"$ $\"About$

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Discriminant must be 0.\r
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\n" ); document.write( "\n" ); document.write( " $\"16%5E2-4%2A9%2Ac=0\"$
\n" ); document.write( " $\"4%2A4%2A16-4%2A9c=0\"$
\n" ); document.write( " $\"4%2A16-9c=0\"$
\n" ); document.write( " $\"9c=4%2A16\"$
\n" ); document.write( " $\"c=%284%2A16%29%2F9\"$
\n" ); document.write( " $\"highlight%28c=64%2F9%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "-------------------------------
\n" ); document.write( "---MISTAKE---
\n" ); document.write( " $\"16%5E2-4%2A9%2A16%2Ac=0\"$ ----mistake
\n" ); document.write( " $\"16%2B36c=0\"$
\n" ); document.write( " $\"8%2B18c=0\"$
\n" ); document.write( " $\"4%2B9c=0\"$
\n" ); document.write( " $\"9c=-4\"$
\n" ); document.write( " $\"cross%28c=-4%2F9%29\"$ \n" ); document.write( "

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