How Do You Start Solving a Logarithmic Equation?

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NextElement

Homework Statement

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

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

on Phys.org

UltrafastPED

Gold Member

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!