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Try a shortcut (Posted on 2018-01-21) Difficulty: 2 of 5
List all real numbers x fulfilling:
16x + 1 = 2x + 8x

  Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)
Solution: (Hide)
let 2^x=z
(z-1)*(z^3-1)=1
z-1=0
z=1
x=0

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionNo shortcuts (spoiler)Steve Herman2018-01-21 09:41:24
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