Answer:
Step-by-step explanation:
(A) The given expression is:

which can be written as:
 which is a rational number.
 which is a rational number.
(B) The given expression is:

which can be written as:
 which is an irrational number.
 which is an irrational number.
(C) The given expression is:

which can be written as:
 which is an irrational number.
 which is an irrational number.
(D) The given expression is:

which can be written as:
 which is a rational number.
 which is a rational number.
(E) The given expression is:

which can be written as:
 which is a rational number.
 which is a rational number.
(F) The given expression is:

which can be written as:
 which is an irrational number.
which is an irrational number.