| log5 6 − 3(log5 2+ log5 3) | log5 6 − ( log5 63 + Log5 33 | ||
= | |||
| log5 6 | log5 6 |
| log5 6 − 3log5 6 | ||
= | = −2 | |
| log5 6 |
| log2 15 − 3,5(log2 3 + log2 5) | |
= U{ log2 15 − ( log2 3312 | |
| log2 45 − log2 3 |
| log2 15 − 3,5 log2 15 | ||
+ log2 5312 ) }{ log2 15 } = | = U{ −2,5 log 2 | |
| log2 15 |
| log56−3(log52+log53) | log56−3log56 | −2log56 | |||
= | = | =−2 | |||
| log56 | log56 | log56 |