Question

(8b-8)(8b+8)- 8b(8b+8) помогите сократить пж

Answer 1

(8b - 8)(8b + 8) - 8b(8b + 8) =
= 64b² - 64 - 64b² - 64b=
 = -64 - 64b =
  = -64(1 + b)