(х + у)2 (2 + а)2 (с + 7)2 (а + в)2 (m + n)2 (a + 8)2 (9 + b)2 (k+ 0,3)2 (d + 0,5)2 (0,2 + x)2 (a + 6)2 (в + 4а)2 (2х + 1)2 (11 + у)2 (6а + 2в)2 ( с + в)2 (х + у)2 (0,4х + 3у)2 (12а + 3)2 (0,8х + 5)2 (с3 + 8)2 (2a + b2)2 (11a2 + 2b)2 (a4 + 1)2 (3x + 4y)2 (4b + 9a)2 (0,5a + 60b)2 (0,2x + 0,6y)2 (a – b)2 (n – m)2 (с – 5)2 (p – q)2 (2m – n)2 (2a – 8)2 (6 – 3b)2 (5k – 0,3)2 (q – 0,1)2 (0,7 – x)2 (6 – 2b)2 (x – 3y)2 (2х – 5)2 (11 – d)2 (7а – 4в)2 ( x – y)2 (a – b)2 (0,1х – 10у)2 (13а – 1)2 (0,8х – 5)2 (с4 – 7)2 (3a – b3)2 (4a2 – b)2 (x5 – 2)2 (6x – 2y)2 (8b – 9a)2 (0,5a – 30b)2 (0,2x – 0,6y)2 (n - m)(n + m) (x - y)(x + y) (a + b) (a - b) (2 - a)(a + 2) (3 - x)(3 + x) (a - 7)(7 + a) (p + 5) (p - 5) (8c – 9d)(8c + 9d) (n - 3m)(n + 3m) (7x – 3y)(7x + 3y) (5n - 8m)(5n + 8m) (x + 2y) (x – 2y) (x2 + 5) (x2 - 5) (a - 1)(a + 1) (10 - x)(10 + x) (c - 4)(c + 4) (3a - 1)(3a + 1) (6n - 8)(6n + 8) (9p - q)(9p + q) (7 - 5m)(7 + 5m) (4 + 3m) (3m - 4) (b- 5a)(5a + b) (x – 0,5)(x + 0,5) (0,3 + 2b) (0,3 – 2b) (x – 0,6)(0,6 + x) (10a - b)(b + 10a) (0,1 - m)(0,1 + m) (4n - 2m)(4n + 2m) (0,9c - m)(0,9c + m)