mak6156
19.05.2020 •
Mathematics
List the following sets O={x:-9
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Ответ:
x = 4.
Step-by-step explanation:
log(x) + log(x+5) = log(6x +12)
log x(x +5) = log(6x + 12)
Therefore x(x + 5)= 6x +12
x^2 + 5x - 6x - 12 = 0
x^2 - x - 12 = 0
(x - 4)(x + 3) = 0
x = -3, 4.
logs of negative values do not exists so the anser is x = 4.
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