Question 1014980
The original equation
{{{p(x)= x^3+4x^2-9x-36  }}}
To evaluate P(-4) we substitute -4 for x
{{{p(-4)= (-4)^3+4(-4)^2-9(-4)-36 }}}
Simplifying
{{{p(-4)= (-64)+4(16)+36-36 }}}
{{{p(-4)= (-64)+64  }}}
{{{p(-4)= 0}}}
As for the meaning, when x = -4,
The value of the function P(x) = 0