Răspuns :
log₃⁸¹ = log₃3⁴ = 4log₁¹ = 4
log₅²⁵ = log₅5² = 2log₅⁵ = 2
lg 100000 = log 10⁵ = 5
4+2-5 = 6-5 = 1
Oricat am incercat si eu, nici mie nu imi da 0
[tex]\it log_381+log_5 25-lg100000= log_3 3^4+log_55^2-lg10^5=4+2-5=1[/tex]
log₃⁸¹ = log₃3⁴ = 4log₁¹ = 4
log₅²⁵ = log₅5² = 2log₅⁵ = 2
lg 100000 = log 10⁵ = 5
4+2-5 = 6-5 = 1
Oricat am incercat si eu, nici mie nu imi da 0
[tex]\it log_381+log_5 25-lg100000= log_3 3^4+log_55^2-lg10^5=4+2-5=1[/tex]