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= log (32.25/8)
= log 100
= 2
b) ⁴log216 - ⁴log54 + ⁴log64
= ⁴log(216/54.64)
= ⁴log(256)
= ⁴log4⁴
= 4
c) ⁵log625 + ⁷log343 + ⁶log 216
= 4 + 3 + 3
= 10
d) ⁷log 2 = a , ²log3 = b
⁶log 32 = log 32
log 6
= ⁷log2⁵
⁷log3 + ⁷log 2
= 5.⁷log2
⁷log2.²log 3 + ⁷log 2
= 5a
ab +a
= 5a
a(b+1)
e) ³log5 = p
⁸¹log125 = 3/4 p