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Mathematics 20 Online
OpenStudy (anonymous):

Factor 9b2 - 4. (3b + 1)(3b - 4) (3b + 2)(3b - 2) (3b - 2)(3b - 2)

Parth (parthkohli):

\(\Large \color{purple}{\rightarrow a^{2} - b^2 = (a +b)(a-b) }\)

OpenStudy (anonymous):

(3b + 2)(3b - 2)

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