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noname [10]
4 years ago
7

3logbase5(x^2+9)-6=0

Mathematics
1 answer:
Pavlova-9 [17]4 years ago
5 0
3\log_5(x^2+9)-6=0
3\log_5(x^2+9)=6
\log_5(x^2+9)=2
5^{\log_5(x^2+9)}=5^2
x^2+9=25
x^2=16
x=\pm\sqrt{16}
x=\pm4
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