Saturday 28 November 2015

LOGARITHMS 2




If log3(3x + 12)=4; find x

   Solution

log3(3x + 12)=4

 (3x + 12)=34   
                      
 3x + 12=81


3x = 81 – 12

3x =  69


3x =  69   
3        3

x = 23


Hence x = 23


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

If log2(2x - 26)=3; find x

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