1 (d − 5)(9d + 1)(3d − 9) 2 (b3 + 4b + 2)(-b3 - 4b + 2) 3 (x + y)(x2 - 3x2y + 2xy2 + y2)

Question

1 (d − 5)(9d + 1)(3d − 9)
2 (b3 + 4b + 2)(-b3 - 4b + 2)
3 (x + y)(x2 - 3x2y + 2xy2 + y2)

Answer 1

1. (d − 5)(9d + 1)(3d − 9)
(9d^2+d-45d-6)*(3d-9)
(9d^2-44d-5)*(3d-9)
27d^2-81d^2-132d^2+396d-15d+45
27d^3-213d^2+381d+45