Question

if x+k is a factor of polynomial x³+kx²-2x+k+4 find the value of k​

Answer 1

Answer:

If x+ k is factor then x=-k is the root of this equation then after putting value of x=-k in this equation,

We get -k^3+k^3–2(-k)+k+4=0

i.e 3k=-4

i.e k=-4/3 answer.