Question

log2(9-x)^2=1

(Primul 2 este baza)

Answer 1

conditia de     existenta

(9-x)²≠0    9-x≠0     9≠x

log₂(9-x)²=1=>

(9-x)²=2^1

9-x)²=2=.>

9-x=√2=>

-x=√2-9=>

x=9-√2