Question

1 point
2) If one root of the quadratic
equation 2x^2+ Kx - 2 = 0 is -2
find the value of k.)
*
O-3
O 3
o 5​

Answer 1

Answer:

3

Step-by-step explanation:

given -2 is a root of the quadratic equation

$2x^{2} +kx-2=0$

$2(-2)^{2}+k(-2)-2=0\\ 2(4)-2k-2=0\\2k=6\\k=3$

Answer 2

Step-by-step explanation:

put -2 in the place of x

hence ans will be 3

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