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16 July, 12:40

2x^3+18x^2-18x-162 = 2 (x+k) (x-k) (x+9) in the factored form what is the value for k

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  1. 16 July, 13:54
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    Note that the last term will be equal to - 18k^2, so we write the equation: - 18k^2=162. Dividing by 18, we see that k^2=9, so k=3 or - 3.
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