Question

log 13(5-x)=2log13 4

Answer 1

log13 (5-x)=2log13 4 , x menše čem 5!
log13 (5-x)=log13 4²
log13 (5-x)=log13 16
5-x=16, -x=11, x=-11¨, -11 menše čem 5
Otvet: x=-11

Answer 2

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