Question

someone please help ​

Answer 1

Step-by-step explanation:

Let

$p(x) = {x}^{3} - 3x + k$

$as \: \: x = - 3$

$p( - 3) = {( - 3)}^{3} - 3( - 3) + k$

As its divisible by x +3 so remainder should be 0 that is p(-3) =0

$0 = - 18 + k$

$k = 18$