Monday, 1 May 2017

LOGARITHMS 1




Simplify Log28192 – Log5625

Solution

= Log28192 – Log5625

= Log2213 – Log55

= 13Log22 – 4Log55   because Logaan =  nLogaa

= (13 x 1) – (4 x 1)      because Logaa =1

= 13 – 4

= 9

Hence Log28192 – Log5625 = 6 

TRY THIS…………..

NECTA 1995 QN 24b

Simplify Log232 – Log39.

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