document.write( "Question 47051: find 3n^2 if n(n+5)=-4 \n" ); document.write( "

Algebra.Com's Answer #31172 by Nate(3500) $\"\"$ $\"About$

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n(n + 5) = -4
\n" ); document.write( "n^2 + 5n + 4 = 0
\n" ); document.write( "(n + 1)(n + 4) = 0
\n" ); document.write( "n = -1 and n = -4
\n" ); document.write( "n = -1:
\n" ); document.write( "3n^2 = 3(1) = 3
\n" ); document.write( "n = -4:
\n" ); document.write( "3n^2 = 3(16) = 48 \n" ); document.write( "

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