Question

(6c-5)(6c-5)-(6c-5)² при с=11 помогите плиз

Answer 1

(6c-5)(6c-5)-(6c-5)^2 =
(6c-5)(6c-5-6c+5) =
(6c-5)•0 = 0.

Answer 2

(6c-5)(6c-5)=(6c-5)² следовательно
(6c-5)(6c-5)-(6c-5)² =0 при любом c
Ответ: 0