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Mathematics 9 Online
OpenStudy (anonymous):

Find the Greatest common factor 7x^3,7x,-28

OpenStudy (dumbcow):

7

OpenStudy (anonymous):

No it's 28.

OpenStudy (anonymous):

Because if x=4, the last one obviously works. The second one would be 7x4=28 and the last would be 7(4^3)= 7(64)=448, which, dividing by 28 gives 16, indicating a factor.

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