document.write( "Question 42493: Find the value of k such that
\n" ); document.write( "z^2+4z+k
\n" ); document.write( "is a perfect square.\r
\n" ); document.write( "\n" ); document.write( "k= \n" ); document.write( "

Algebra.Com's Answer #27654 by Nate(3500) $\"\"$ $\"About$

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z^2 + 4z + k
\n" ); document.write( "z^2 + 4z + 4
\n" ); document.write( "(z + 2)(z + 2)
\n" ); document.write( "k = 4 \n" ); document.write( "

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