Question

logarytmy

Answer 1

a)

log 6 [ x ] = log 6 [ 4 ] + log 6 [9]

log6 [ x ] = log 6 [ 4*9]

log 6 [x] = log 6 [ 36]

x = 36

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b)

log x = 2 log 5 + log 4

log x = log 5^2 + log 4

log x = log 25 + log 4

log x = log ( 25*4)

log x = log 100

x = 100

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c)

log 3 [ x] = log 3 [ 18] - log 3 [ 2] = log 3 [ 18 : 2] = log 3 [ 9]

x = 9

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d)

log x = log 80 - 3 log 2 = log 80 - log 2^3 = log 80 - log 8 = log [ 80 : 8] = log 10

x = 10

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