Which two equations are equivalent? a. = ( + 3)2 and = 2 + 6 b. = ( − 5)2 and = 2 − 25 c. = ( − 3)2 and = 2 − 6 + 9 d. = ( + 5)2 and = 2 + 25 + 10

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.