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²log 32 - ²log 4 + ² log 1/8 = ²log (32:4x1/8)
= ²log 1
= 0
b.
⁷log 4 + 2 ⁷log 3 - 2 ⁷log 6 = ⁷log 4 + ⁷log 3² - ⁷log 6²
= ⁷log 4 + ⁷log 9 - ⁷log 36
= ⁷log (4x9:36)
= ⁷log 1
= 0
= ²log (2)⁵ - ² log 2² + ²log
= 5 - 2 + (-3)
= 0
2. ⁷log 4 + 2 ⁷log 3 - 2 ⁷log 6
= ⁷log 4 + ⁷log 3² - ⁷ log 6²
=
=
=
= ⁷log 1