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Mathematics 19 Online
OpenStudy (secret-ninja):

Kind of stuck here. :p Factor completely 3x^2 - 21. 3(x^2 - 7) 3(x + 7)(x - 7) 3(x + 7)(x - 3) Prime

OpenStudy (secret-ninja):

I don't know if its A or C, or if I'm just having a brain fart. :/

Nnesha (nnesha):

okay what is your gcf ??

OpenStudy (anonymous):

It's A. Prove my solving all your options.

OpenStudy (secret-ninja):

The gcf is 3.

Nnesha (nnesha):

|dw:1420048194343:dw| gcf is 3 so after that you can factor it

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