Question 1129800
If log 5= x, prove that log 125 = 3x/(2(1-x))
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{{{ log(b,(5)) = x }}}  —>   {{{ log(b,(125)) = log(b,(5^3)) = 3log(b,(5)) = 3x }}}  <br>

If one is to prove  log(125) = 3x/(2(1-x))  then it can only hold for some specific base b, which must be provided by you the student.   Certainly {{{ b <> 5 }}} as that causes division by zero.   <br>