Hi,

2logX-log(8x-160)-1=0





log(x^2/8(x - 20)=1



10^1  = (x^2/8(x - 20)

10*8(x-20) = x^2

80x - 1600 = x^2

x^2 -80x + 1600 = 0

(x-40)(x-40)=0

x = 40





 

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