Answer: GCF= b
7a
The GCF is b2.
The GCF is a2b.
do you mean 12a3 - 5a2b - 2b2 ?? = 12a3 + 8a2b - 3a2b - 2b2 then group 1st 2 terms and last 2 and use GCF = (12a3 + 8a2b) + ( - 3a2b - 2b2) = 4a2(3a + 2b) + (-b)(3a2 +2b) not much help, but that's all folks
b
The GCF is 27b.
Since 50abc is a factor of 50ab2c3, it is automatically the GCF.
The GCF is 7ab^2.
You need at least two terms to find a GCF.
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(-8 + b2) - (5 + b2) = -8 + b2 - 5 - b2 = -13