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Determine whether 84-49n^4 is a difference of two squares. If so, factor it. If not, explain why
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Determine whether 84-49n^4 is a difference of two squares. If so, factor it. If not, explain why

User Vitaly Babiy
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81 would be a perfect square, but 84 is not a perfect square. So 84-49n^4 is not a difference of 2 squares.

81 - 49n^4 is the diff. of 2 squares and factors into (9-7n^2)(9+7n^2).

User Sandoz
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