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Factor completely. 81x^4 − 1

Factor completely. 81x^4 − 1
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1 vote
Factor completely. 81x^4 − 1

asked
User Humayoon Siddique
by
7.6k points

1 Answer

4 votes
81x^4-1=(9x^2-1)(9x^2+1)
=(3x-1)(3x+1)(9x^2+1)
answered
User Yerme
by
7.8k points
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