Solve the log equation

  • #1

Homework Statement


Solve the logarithmic equation for x:
Log2 (x^2 - x - 2) = 2

Homework Equations





The Attempt at a Solution



I'm just totally lost on how to even start...

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
UltrafastPED
Science Advisor
Gold Member
1,912
216
Hint: if : Log2 (z) = 2, then z=2^2=4.
 
  • #3
Solved it. Totally forgot that if you put log base 2 as the power of 2, they cancel!
 

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