Question

If x+1 is a factor of the polynomial 2x+x +kx then the value of k is (a)- 2​

Answer 1

x+1 is a factor

therefore,p(x)= -1

p(-1)=2x+x+kx

2×-1+(-1)+k×-1=0

-2-1-k=0

-3-k=0

-k=0+3

-k=3

k=-3