Question

Find the value of k if x = -2 is a solution of the quadratic equation 2x^2+kx+30=0​

Answer 1

Answer:

19

Step-by-step explanation:

Putting x = -2

2×-2^2 + k×-2 + 30 = 0

8 - 2k + 30 = 0

2k = 38

k = 19