Question

1) If one root of the quadratic equation 2x2 + kx - 2 = 0 is -2 then find the value of k.​

Answer 1

one root is -2

so, (2 x 4)-2k = 2

2k = 8-2= 6

K = 3

PLS MARK AS BRAINLIEST

Answer 2

Answer:

let x= -2 and do the equation

Step-by-step explanation:

2(-2) + k(-2) - 2=0

-4 + -2k = 2

-2k = 2- (-4)

-2k = 6

k=6/-2

k=-3