Question

Find the value of m if x+2 is a factor of -x3 + 2 x + 3m

Answer 1

here , x+2=0
x= -2
then putting the value of x in equation -x3 +2x + 3m
-(-2)3 + 2×-2 + 3m =0
8 - 4 + 3m =0
4 + 3m =0
m = -4/3
answer.