Answer:
Choice (3)
is correct.
Step-by-step explanation:
Given expression is 
Now we need to simplify this and check which of the given choices best match with it.


{using formula
}
{using formula
}


{using formula
}
Hence choice (3)
is correct.
Answer:
ok
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
I believe it is the communtative property followed by the associative property.
Sorry if that is not right!
Answer: e + 11
Step-by-step explanation: