Thursday 3 December 2015

LOGARITHMIC EQUATIONS-2


If log3(3x + 21)=3; find x

   Solution

log3(3x + 21)=3

 (3x + 21)=33   
                      
 3x + 21=27


3x = 27 – 21

3x =  6


3x =  6   
3       3

X = 2


Hence x = 2

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


If log2(3x - 22)=5; find x

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