Wednesday, 1 April 2015

LOGARITHMS 1


If log3(3x + 12)=3; find x

   Solution

log3(3x + 12)=3

 (3x + 12)=33   
                      
 3x + 12=27


3x = 27 – 12

3x =  15


3x =  15   
3        3

X = 5


Hence x = 5

TRY THIS...............


If log2(3x - 22)=3; find x

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