Question

If one root of the quadratic equation 2x²+kx-2=0is -2. find value of K.​

Answer 1

Answer:

x = -2

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

2(4)-2k-2= 0

8-2k-2 = 0

6-2k = 0

2k = 6

k = 3

Answer 2

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