how to solve for x? (1 Viewer)

[bubb]

how to solve for x?

log2x(216) = x

2x is the base

 

[FrankXie]

You must factorise the number 216. No better way because the variable appears on both the base and the index.
216=6*6*6=6^3=(2*3)^3. so x=3

 

[Squar3root]

I got x = 3

 

[si2136]

It would've been better if the question was written better. The answer is x=3 though.

log2x(216) = x --> log2x(6^3) = x