How do you solve 7c2 - 7c1?

Probability Question?  I need the answer, please and the steps to work this problem.
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1 Answer

what is c2 and c1? do u mean c^2?

anyways how i would go about solving this is i would factor out 7

7(c2-c1)

or if its c^2 and c^1 that u mean i could factor out 7c

7c(c-1)
by Level 6 User (15.3k points)

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