The factor of ab refers to the numbers or variables that can be multiplied to produce the term ab. In this case, the factors of ab are a and b. Factors are numbers or variables that can divide into a term without leaving a remainder. Therefore, the factors of ab are a and b because they can be multiplied together to result in the term ab.
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The answer depends on whether or not a is a factor of c.
The GCF is b.
The factors of 3a are 3 and a. The factors of 6c are 6 and c. The factors of ab are a and b.
The GCF is a2b.
Well, honey, first things first, you group the terms with common variables together. So, you have (Ab - ad) + (CD - cb). Then, you factor out the common factors from each group. That gives you A(b - d) + C(D - b). Voila! That's your factored expression.