Monday 14 November 2016

LOGARITHMS 11


If log9(2x + 17)=2; find x.

   Solution

Log9(2x + 17)=2

(2x + 17)=92           
                                            
2x + 17=81

2x =81 – 17

2x = 64

2x =   64   
2        2

x = 32

Hence x = 32


TRY THIS………………


If log7(2t - 5)=2; find t

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