# Log help

posted by
**Anonymous**
.

If a^3 + 3ab(a+b+3)+b^3 = 10ab, show that log (a+b)=1/3(log a + log b). Please show step by step. Thank you!

posted by
**Anonymous**
.

If a^3 + 3ab(a+b+3)+b^3 = 10ab, show that log (a+b)=1/3(log a + log b). Please show step by step. Thank you!