Extra questions of polynomials find the value of k if x-3 is a factor of kx3-3kx-k
Answers
Answered by
2
it is given that
x - 3 is a factor ,so
x-3 = 0
x = 3
p(x) = kx³ -3kx -k
p(3) = k(3)³- 3k(3) - k
k(3)³- 3k(3) - k = 0
9k - 9k -k = 0
-k =0
k = 0
x - 3 is a factor ,so
x-3 = 0
x = 3
p(x) = kx³ -3kx -k
p(3) = k(3)³- 3k(3) - k
k(3)³- 3k(3) - k = 0
9k - 9k -k = 0
-k =0
k = 0
Similar questions