Question

if x=5/2 is a zero of polynomial 2x²-kz-12 then find the value of k​

Answer 1

Answer:

the value of k is 5 and the z mentioned in the question should be x

Step-by-step explanation:

ATQ, 2(5/2)2 - k(5/2) -12=0

2(25/4) -5/2k -12=0

25/2-5/2k=0

k= 25*2/5*2

k= 5