5 log 2x^(2) - 5 log (x+5) = 1
Matematika
nadyaputriy29
Pertanyaan
5 log 2x^(2) - 5 log (x+5) = 1
1 Jawaban
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1. Jawaban 18Navillera
^5 log 2x² - ^5 log (x + 5) = 1
^5 log [2x²/(x + 5)] = ^5 log 5
2x²/(x + 5) = 5
2x² = 5x + 25
2x² - 5x - 25 = 0
(x - 5)(2x + 5) = 0
x = 5 atau
x = -5/2