Question 244679
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The first term has 0 factors of 7 and 3 factors of b.


The second term has 1 factor of 7 and 2 factors of b.


The term that has the least factors of 7 is the first term which has 0 factors of 7, therefore there are 0 factors of 7 in the GCF.


The term that has the least factors of b is the second term which has 2 factors of b, therefore there are 2 factors of b in the GCF.


There are no other factors to consider, therefore the GCF is *[tex \Large b^2]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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