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Mathematics 8 Online
OpenStudy (anonymous):

Multiply. (9x^3+4)(9x^3-4)

OpenStudy (asnaseer):

this is of the form (a+b)(a-b) which equals a^2-b^2

OpenStudy (king):

81x^6-16

OpenStudy (asnaseer):

\[(9x^{3})^2-4^{2}=81x^{6}-16\]

OpenStudy (anonymous):

THX

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