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Mathematics 20 Online
OpenStudy (anonymous):

What is the simplified form of

OpenStudy (anonymous):

OpenStudy (hoblos):

use the property a^2 - b^2 = (a-b)(a+b) so x^4 - 81 = (x^2 - 9)(x^2+9) = (x-3)(x+3)(x^2 + 9)

OpenStudy (anonymous):

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