Sunday 23 April 2017

LOGARITHMS 13


Simplify Log21024 – Log53125

Solution

= Log21024 – Log53125

= Log2210 – Log55

= 10Log22 – 5Log55   because Logaan =  nLogaa

= (10 x 1) – (5 x 1)      because Logaa =1

= 10 – 5

= 5

Hence Log21024 – Log5625 = 6 

TRY THIS…………..

NECTA 1995 QN 24b

Simplify Log232 – Log39.


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