divide - 21 l to the power of 3 m to the power of 5 + 14 and the power of 8 m to the power of 10 - 42 and the power of 6 m to the power of 8 by minus 14 l to the power of 2 m to power of 2
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.