Answer: I am not 100% sure but I think it is
-8(-5)(10)(-2), -3(2)+(-10)÷2, 10÷{5[-5(3.2)]+-7.8, 8÷2(-4+10)
Explanation:
Grouping symbols are:
parentheses, brackets, braces, radicals, and fraction lines. Show where a group starts and ends, and help to establish the order.
I apologize for this taking forever to type, it was all the brackets and etc.