Question

If x + 3 is a factor of the polynomial p (x) = x ^3 + 7 k x^ 2 - 2 ( k x + 9 k ) . Find all the zeroes of p(x). Class Xth Polynomials.
Please Help ASAP.

Answer 1

Answer:

x = -3

p ( -3 ) = -3^3 + 7. k. -3^2 - 2 ( k . -3 + 9k )

= -27 + 63k - 2k + 6 - 18k

= -21 + 43k

43k = 21

k = 21/ 43