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9 December, 18:57

Factor 49x^16 - 16y^64

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  1. 9 December, 22:42
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    Hello:

    49x^16 - 16y^64 = 7² (x^8) ² - 4² (y^32) ² = (7x^8) ² - (4y^32) ²

    = (7x^8 - 4y^32) (7x^8 + 4y^32)

    (by identite : a²-b² = (a-b) (a+b))
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