Question

for what value of k is 3 is a zero of polynomial 2x square + X + k

Answer 1

heya!!

here given : p(x) = 2x^2 +x +k

=> 3 is a zero ..put in p(x)

=>p(3)=2(3)^2+3+k=0

=>18+3+k=0

=> k=-21


hope this helps you