simplify the following expression fully. I can't get some functions to work. Please read in the parenthesis. These are stacked.

1 + 1 (each 1 is underlined)) a b (a to b is underlined) a _ b (a and b is each underlined) b a (the minus sign is correct)
Thanks

To simplify the expression, let's go through each part step by step.

1 + 1:
This is a simple addition. Adding 1 to 1 gives us 2.

a b:
The expression "a b" does not have any specified operation between a and b. So, we assume it is multiplication. Multiplying a by b gives us "ab."

a _ b:
Here, the underscore (_) represents a multiplication symbol, just like in the previous step. So "a _ b" is equivalent to "ab" as well.

b a:
This expression has a minus sign between b and a. When we subtract a from b, we get "b - a."

Summing up the simplifications:

1 + 1 = 2
a b = ab
a _ b = ab
b a = b - a

As a result, the fully simplified expression is: 2 + ab + ab + (b - a).