Question

If x = 3 upon 2 is a zero of polynomial 2 x square + kx - 12 then find the value of k

Answer 1

Answer:

k=6

Step-by-step explanation:

x=3/2

2x + kx -12 = 0

put the value of x in this polynomial

2×3/2 + k×3/2 -12 = 0

3 + 3k/2 -12 = 0

3k/2 - 9 = 0

3k/2 = 9

k = 9×2/3

k = 6

Answer 2

Answer:

Step-by-step explanation:

2(3/2)²+k3/2-12=0

18/4+3k/2-12=0

3k/2=12-18/4

3k/2= 15/2

3k=15

K= 5