Question

for what value of k,(x+5) is a factor of p(x)=x³+x+3k​

Answer 1

Answer:

7559 54"@

Step-by-step explanation:

Answer 2

Answer:

-40

Step-by-step explanation:

x=-5 is zero of polynomial

then

-x^3+x+3k=0

if x=-5

-(-5)^3+(-5)+3k=0

125-5+3k=0

120+3k=0

3k=-120

k=-120/3

k=-40

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