document.write( "Question 309871: z^2 + 15z + 36 \n" ); document.write( "
Algebra.Com's Answer #221648 by mananth(16946)\"\" \"About 
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z^2 + 15z + 36
\n" ); document.write( "z^2+12x+3x+36
\n" ); document.write( "z(z+12)+3(z+12)
\n" ); document.write( "(z+12)(z+3)
\n" ); document.write( "
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