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Mathematics 21 Online
OpenStudy (anonymous):

factorize: p2 -81

OpenStudy (anonymous):

differnce of squares

OpenStudy (anonymous):

indeed

OpenStudy (anonymous):

(p+9)(p-9)

OpenStudy (anonymous):

(p+9)(p-9)

OpenStudy (anonymous):

(p+9)(p-9) perfect square of p and 81

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