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horarharry
@horarharry
September 2021
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Задание 21, помогите с решением, пожалуйста.
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ghjbyb49
[a/(a+8) + a/(8-a)]:4/(a^3 - 64*a) = A : B
A = [a/(a+8) - a/(a-8)] = [(a^2-8*a - a^2-8*a)/(a^2-64) = -16*a/(a^2-64)
B = 4/(a^3 - 64*a) = 4/a(a^2-64)
A : B = A * 1/B = -16*a * a/4 = -4a^2
Ответ: - 4*a^2
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Answers & Comments
A = [a/(a+8) - a/(a-8)] = [(a^2-8*a - a^2-8*a)/(a^2-64) = -16*a/(a^2-64)
B = 4/(a^3 - 64*a) = 4/a(a^2-64)
A : B = A * 1/B = -16*a * a/4 = -4a^2
Ответ: - 4*a^2