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owll
@owll
November 2021
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Помогите пожалуйста упростить выражение: [tex] \frac{2}{b-1}+\frac{9}{(1-b)^2}*\frac{b^2-1}{9}-\frac{3b+1}{b-1}[/tex]
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manyny06
Verified answer
2\(в-1) +9\(в-1)² * (1-в)(1+в) \ 9 - (3в+1)\(в+1) =
2\(в-1) + (в+1)\ (в-1) - (3в+1) \ (в-1) =
(2+в+1-3в-1) \ (в-1)= (2-2в)\(в-1)= - 2 (в-1)\(в-1) = -2
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Verified answer
2\(в-1) +9\(в-1)² * (1-в)(1+в) \ 9 - (3в+1)\(в+1) =2\(в-1) + (в+1)\ (в-1) - (3в+1) \ (в-1) =
(2+в+1-3в-1) \ (в-1)= (2-2в)\(в-1)= - 2 (в-1)\(в-1) = -2