Friday 18 September 2015

LOGARITHMS 4


If log5 (2x + 3) =2; find x

   Solution

log5 (2x + 3) =2

(2x + 3)=52     
                    
2x + 3=25

2x =25 – 3

2x = 22

2x = 22   
2        2

X = 11

Hence x = 11

TRY THIS……..


If log7 (2x + 11) =2; find x

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