Question

If one root of the quadratic equation 2x*
2x+k=0 is -1÷3
then find the value of k,
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Answer 1

Answer:

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Answer 2

2x²+2x+k=0

When x = -1

3

2(-1)+2(-1)+k=0

3 3

-2+-2+k=0

3 3

-2-2 + k = 0

3

-4 + k = 0

3

k = 4

3

The value of k is 4

3

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