решите уравнение log(4x+5)осн5=2+log(x-4)осн5. Created by diman0071997. algebra-ru

решите уравнение log(4x+5)осн5=2+log(x-4)осн5...

diman0071997 @diman0071997

August 2022 1 1 Report

решите уравнение

log(4x+5)осн5=2+log(x-4)осн5

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nKrynka log_5 (4x + 5) = 2+ log_5 (x - 4)
log_5 (4x + 5) = log_5 (25) + log_5 (x - 4)
log_5 (4x + 5) = log_5[ (25) * (x - 4)]
4x + 5 = (25) * (x - 4)
4x - 25x = -100 - 5
- 21x = - 105
x = 5

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