Using Chen FA's formula: (1) (x-2y) 178; (x + 2Y) 178; (2)(a-2b+3)(a+2b-3)
(x + 2Y) [(x-2y) (x-2y) (x-2y) (x-2y) (x + 2Y) (x-2y) (x + 2Y) (x-2y) (x-2y) (x + 2Y) (x-2y) (x-2y) (x-2y) (x-2y (x + 2Y) (x-2y (x + 2Y) (x + 2Y) (x-2y) (x-2y) (x-2y) (x-2y) (x-2y) (x-2y) (x + 2Y) (x + 2Y) (x-2y) (x-2y) (x-2y) (x-2y-2y) (x-2y) (x-2y-2y (x + 2Y) (x-2y-2y) (x + 2y-2y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) (x + 2Y) y- 4B & # 178; + 12b-9, glad to answer for you