b₁ = - 2
b₂ = - 5
b₂ = b₁+ d
d = b₂ - b₁ = - 5 - (- 2) = - 5 + 2 = - 3
b₁₂ = b₁ + 11d = - 2 + 11 * (- 3) = - 2 - 33 = - 35
Ответ : b₁₂ = - 35
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
b₁ = - 2
b₂ = - 5
b₂ = b₁+ d
d = b₂ - b₁ = - 5 - (- 2) = - 5 + 2 = - 3
b₁₂ = b₁ + 11d = - 2 + 11 * (- 3) = - 2 - 33 = - 35
Ответ : b₁₂ = - 35