Oblicz niewiadomą x : a) log₂8=x b)logₓ9=2 c)log₅=1 d) x log₄ 4=2 e)log₆x=log₆ 4 + log₆9 f)log₃x=log₃18-log₃2 g)log x=2 log5+log4

a) log₂8=x  2^x=8 x=3 b)logₓ9=2  x²=9 x=3  c)log₅=1 d) x log₄ 4=2  log₄4=1 x*1=2 x=2 e)log₆x=log₆ 4 + log₆9 log₆4+log₆9=log₆(4*9)=log₆36=2 log₆x=2 6²=x x-36 f)log₃x=log₃18-log₃2 log₃(18/2)=log₃9=2 log₃x=2 3²=x x=9 g)log x=2 log5+log4 2log5=log5² log(25*4)=log100=2 logx=2 10²=x x=100