Let's evaluate each of the statements one by one to determine their truthfulness.
Statement #1:
Calculating the left-hand side:
Calculating the right-hand side:
Since both sides are equal, statement #1 is true.
Statement #2: and
Calculating the first part:
-
Left-hand side:
-
Right-hand side:
Since
Now let's look at the second part:
-
Left-hand side:
-
Right-hand side:
Since
So, statement #2 is false.
Statement #3:
Calculating the left-hand side:
Calculating the right-hand side:
Since
Conclusion
The only true statement is statement #1. Thus, the true responses are:
1 and 3 (but only #1 is true)