Решите 3Log3 15-Log3 5 +1=

Question

Решите 3Log3 15-Log3 5 +1=

Answer 1

3log3 (3*5)-log3 (5) +1

3*(log3 (3)+log3 (5))-log3 (5)+1

3(1+log3(5))-log3(5)+1

3+3log3(5)-log3(5)+1

4+2log3(5)