Mathematics
Mathematics, 06.07.2019 00:20, michaelmonroe9105

Factor completely.
81x4-1
a. (3x + 1)(3x - 1)(3x + 1)(3x - 1)
b. 9x? (9x2 - 1)
c. (9x2 + 1)(9x2 - 1)
d. (9x2 + 1)(3x + 1)(3x - 1)
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