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megafoma1
@megafoma1
August 2022
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решите под буквой а и б , распишите, даю 25 баллов
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IrkaShevko
Verified answer
1)
а) 2^3 = 5x - 1
5x = 9
x = 1,8
б) x + 5 = 5x + 1
4x = 4
x = 1
2)
а) log2(x) = t
t^2 -2t - 3 = (t - 3)(t + 1) = 0 =>
log2(x) = -1 или log2(x) = 3
x = 1/2 или x = 2^3 = 8
б) log3(x) = 3
x = 3^3 = 27
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Answers & Comments
Verified answer
1)а) 2^3 = 5x - 1
5x = 9
x = 1,8
б) x + 5 = 5x + 1
4x = 4
x = 1
2)
а) log2(x) = t
t^2 -2t - 3 = (t - 3)(t + 1) = 0 =>
log2(x) = -1 или log2(x) = 3
x = 1/2 или x = 2^3 = 8
б) log3(x) = 3
x = 3^3 = 27