Question

5a***(-3a**b)*   *-степень2  ***-степень 6

Answer 1

5a***(3a****b*)
15a*****b****

**** - степень 12 
***** - степень 72 
Вроде так...

 

Answer 2

It seems like you've provided an expression with variables and operations, but it's a bit unclear. It appears you want to simplify the expression, but there are some unusual characters in the expression like "**" and "-степень2 ***-степень 6."

If you could clarify the expression or provide more information about what you'd like to do with it, I'd be happy to assist you further.