Saturday 1 July 2017

LOGARITHMS 1


If log3(10x + 11)=4; find x.

Solution

log3(10x + 11)=4

 (10x + 11)=34      
                                            
 10x + 11=81

10x = 81 – 11

10x =  70

10x707   
10      10

x = 7

Hence x = 7

TRY THIS…………….


If log2(5x + 2)=5; find x

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