document.write( "Question 1014980: what does it mean if P(-4) for the polynomial p(x)= x^3+4x^2-9x-36 equals zero? \n" ); document.write( "

Algebra.Com's Answer #631298 by LinnW(1048) $\"\"$ $\"About$

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The original equation
\n" ); document.write( " $\"p%28x%29=+x%5E3%2B4x%5E2-9x-36++\"$
\n" ); document.write( "To evaluate P(-4) we substitute -4 for x
\n" ); document.write( " $\"p%28-4%29=+%28-4%29%5E3%2B4%28-4%29%5E2-9%28-4%29-36+\"$
\n" ); document.write( "Simplifying
\n" ); document.write( " $\"p%28-4%29=+%28-64%29%2B4%2816%29%2B36-36+\"$
\n" ); document.write( " $\"p%28-4%29=+%28-64%29%2B64++\"$
\n" ); document.write( " $\"p%28-4%29=+0\"$
\n" ); document.write( "As for the meaning, when x = -4,
\n" ); document.write( "The value of the function P(x) = 0 \n" ); document.write( "

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