How Do You Start Solving a Logarithmic Equation?

[NextElement]

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...

 

[UltrafastPED]

Hint: if : Log₂ (z) = 2, then z=2^2=4.

 

[NextElement]

Solved it. Totally forgot that if you put log base 2 as the power of 2, they cancel!