Question

if -2 is a root of quadratic equation 3x²-kx+5=0. find the value of k.​

Answer 1

Answer:

♥ ANSWER ♥

it is given that -2 is a root of quadratic equation 3x² - kx + 5 = 0

3(-2)² - k(-2) + 5 = 0

3(4) +2k + 5 =0

12 +2k = -5

2k = -5 - 12

2k = -18

k = -9

Step-by-step explanation: