Saturday 17 January 2015

LOGARITHMS 12



If log4(2x - 10)=2; find x

   Solution

log4(2x- 10)=2

(2x - 10)=42 
                       
 2x - 10=16

2x =16 + 10

2x = 26

2x =    26 
2        2

x = 13

Hence x = 13

TRY THIS………………..

If log8(2x - 16)=2; find x

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