Question

plzz answers this I will mark it as brainliest​

Answer 1

here

3x2 + kx + 8 = o

3(2+3)2 + k(2×3) +8=0

3(5)2 + k(6) + 8 =0

3(25) +k (6) + 8=0

75 + k(6) + 8 =0

a= 75 ,b= 6k ,c=8

b2 - 4ac

k62- 4(75)(8)

k62- 2400

k6 (k- 400)

k= 400