Question

For what value of k, (x+2) is a factor of P(x)= x³-2kx² +16​

Answer 1

x+2=0 ,so x=(-2)

(-2)³-2k× -2²+16

-8-2k(4)+16

-8-16=8k

-24 =8k

k= (-24\8)

k=-3