Question

if (x+1) is a factor of the polynomial
$3x ^{2} - kx + 5$
Then find the value of k

Answer 1

x+1=0
×=-1
3x^2-kx+5=0
3*-1^2-k*-1+5=0
3+k+5=0
8+k=0
k=-8
I hope it will help you!!!!!