log₃(9b), если log₃(27b) =27.
log₃27+log₃b =27.
3+log3b =27.
в=3²⁴
log₃(9b)=log₃ 9+ log₃ b =2+24 log₃3 =2+24=26
второй способ
log₃ (3*9b) = 27.
log₃3+log₃9в =27
1+log₃9в =27
log₃9в =27-1
log₃9в =26
(x−17)(x+16)=0
х²-17х+16х-272=0
х²-х-272=0
х=17 и х=-16.
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