Simplify Log21024 – Log5625
Solution
= Log21024 – Log5625
= Log2210 –
Log554
= 10Log22 – 4Log55
because Logaan = nLogaa
= (10 x 1) – (4 x 1) because
Logaa =1
= 10 – 4
= 6
Hence
Log21024 – Log5625 = 6
TRY THIS…………..
NECTA
1995 QN 24b
Simplify Log232 – Log39.
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