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Log5+log(5x+1)=log(x+5)+1 |
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Answer» log 5 + log(5x+1) = log( x+5) +1 log5 + log(5x+1) = log (x+5) + log 10 log ( 5(5x+1)) = log(( ( x+5)10)) compare 5(5x+1) = 10(x+5) 1/2 = x+5)/(5x+1) APPLY COMPONENDO and dividendo 1+2)/(1-2) = x+5 + 5x+1)/(x+5-5x-1) -3 = 6x +6)/( -4x +4) -3 = 3/2. ( x+1)/( 1- x) -2 = ( x+1)/( 1-x) x+1 = - 2+2x x= 3 |
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