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2. 25 log 5^-2 = 25 log 25^-1 = -1
3. 3 log 2 = p
=> 8 log 81 = 2 log (3.3.3.3) per 2 log (2.2.2)
= 2p - 3
^5log 0,2
=^5log 1/5
=^5log 1 - ^5log 5
=0-1
=-1
2)
^25log 5-²
=^(5²) log 5-²
=-2/2 ^5 log 5
=-1 ^5log 5
=-1. 1
=-1
3).
^8log 81
=³log 81/³log 8
=³log 3⁴ /(³log 2³)
=(4. ³log 3) / (3. ³log 2)
=4.1 /( 3.p)
=4/(3p)