Which expression is equivalent to (2g^5)^3/(4h^2)^3

Can someone me with this problem . show your work .

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf