If ‒4 is a zero of the polynomial x2 ‒ x (2k + 2) then find the value of k.
It is given in the question that,
One of the zero of the polynomial x2 – x (2k + 2) is - 4
∴ It will satisfy the above polynomial
Now, we have
(- 4)2 – (- 4) - (2k + 2) = 0
16 + 4 - 2k - 2 = 0
- 2k = - 18
k = 18/2
∴ k = 9