Vety pre počítanie s logaritmami

log (x+1) + log (x+2) =
1. log (x² + 3x + 2)
2. (x² + 3x + 2)
3. log (x+1) / (x+2)
4. log [(x+1) + (x+2)]
log (x+3) - log (x-3) =
1. log [(x+3) - (x-3)]
2. log (x+3) . (x-3)
3. log (x+3) / (x-3)
4. (x+3) / (x-3)
2 log x + log 8 - log y - log 4 =
1. log 2(x + 8) / 4y
2. log 8x² / 4y
3. log 8x²y / 4
4. log 4y / 8x²
log (x-2) - 3 =
1. log (x-2) / 3
2. log (x-2) . 3
3. log (x-2) / 1000
4. log (x-2) ³
2 log 3 + 3 log 2 - 0,5 log 16 =
1. 3
2. 4,5
3. 9
4. 18