Question

if x + 2 k is a factor of f(x) =x^4- 4 k^2+x^2 + 2 x + 3 k + 3 find k

Answer 1

x+2=0 ,x= -2. (2)^4-4×k^2+(2)^2+2×2+3k+3 16-4k^2+4+4+3k+3, 27-4k^2+3k, 4k^2-3k-27 now factorize the eq. good it will help you