1) (1+а)^2= 2)(8х-1)(8х+1)= 3)(3а-11b)^2= 4)(x+8)^2= 5)(c+y)^2=
Ответ
1
1) 1a.
2) 8х^2 - 8x^2
2) 8х^2 - 8x^2