Algebra 2
Please explain each step on how to get the answer. Help me :)

Answer:
-5^4 √(216 + 5^4 √(1080)
18
Step-by-step explanation:
first you must expand the expresion
multiply the fractions (to multiply the fractions, multiply the numerator and denominator in a separate manner)
get rid of the parenthesis
evaluate
calculate
multiply
simplify
and finally multiply