Plss telly mistake were i have done wrong and give a correct solution..
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Solve your last equation further, you will get your answer.
k^2 + 3k - k - 3k = 0 [Your last equation]
=> k^2 - k = 0
=> k(k - 1) = 0
=> k = 0, 1
Thus, the value of k can be either equal to 0, or equal to 1.
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