SOLUTION: Find a value for k so that 9m squared-kn squared will have the factors 3m+7n and 3m-7n Help please, and show step by step. Thank You

SOLUTION: Find a value for k so that 9m squared-kn squared will have the factors 3m+7n and 3m-7n Help please, and show step by step. Thank You

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Question 83584: Find a value for k so that 9m squared-kn squared will have the factors 3m+7n and 3m-7n
Help please, and show step by step. Thank You
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find a value for k so that 9m squared-kn squared will have the factors 3m+7n and 3m-7n
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9m^2-kn = (3m+7n)(3m-7n)
9m^2-kn = 9m^2-49n^2
-kn = -49n^2
k= (-49n^2)/(-n)
k = 49n
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Cheers,
Stan H.
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