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OpenStudy (anonymous):
Factor Completely: 3x^2 - 21 3(x + 7)(x - 3) 3(x^2 - 7) 3(x + 7)(x - 7) Prime
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OpenStudy (callisto):
Take out the common factor 3 3x^2 - 21 = 3 (x^2 -7) I think that's it
OpenStudy (cwrw238):
the greatest common factor of 3x^2 and 21 is 3 callisto has it
OpenStudy (anonymous):
Thank you !!
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