Part a: factor 2x2b2 + 5xb2 + 2b2. show your work. (4 points) part b: factor x2 − 8x + 16. show your work. (3 points) part c: factor x2 − 49. show your work. (3 points)

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.