Question

Q22. If (x+5) is a factor of p(x) = x3 – 20x + 5k then k =?
(a)-5
(b) 5
(C) 3
(d)-3​

Answer 1

Answer:

answer is k=5

and if I am right so pls follow me

Answer 2

Answer:

I hope it will be help you and plz make me brainliest

Step-by-step explanation:

Given

if x+5 is a factor of p(x) =x3-20x+5k,then k is

To find

Find the value of k

Solution

=> x + 5 = 0

=> x = -5

P(x) = x³ - 20x + 5k

=> x³ - 20x + 5k = 0

=> (-5)³ - 20 × (-5) + 5k = 0

=> -125 + 100 + 5k = 0

=> 5k = 25

=> k = 25/5 = 5