Answer:
a.)
Step-by-step explanation:

Find the simplest radical form for
:
Find two numbers that multiply to 12, one of which is a perfect square:

Separate:

Simplify by finding the square root:

Insert the simplified version:

Find the simplest radical form of
:
Find two numbers that multiply to 8, one of which is a perfect square:

Separate:

Simplify by finding the square root:

Insert the simplified version:

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