Correct answer only ! i cannot retake factor the expression completely over the complex numbers.

Which of these triangle pairs can be mapped to each other using two reflections?

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required