The greatest common factor of each term in the expression 60ab- 72b is 12b. Which choice shows the expression written as a product? A. 12b(5ab - 6b)
B. 12b(5a - 6)
C. 12b(48a - 60)
D. 12b(48ab - 60b)

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.