SOLUTION: Simplify the expression: (1/8)^-2/3 + (1/4)^-1/2 I don't know how to do this! Do I find the LCD first? (1/8)^-2/3 + (2/8)^1/2

Question 107732: Simplify the expression:
(1/8)^-2/3 + (1/4)^-1/2
I don't know how to do this! Do I find the LCD first?
(1/8)^-2/3 + (2/8)^1/2
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
You won't need an LCD for this one.

The first thing you need is a couple of rules:
1)

2) when you have an exponent of the form , it means to take the nth root of the expression raised to the m power.

is the original problem, so apply rule 1).

Now apply rule 2) to each of the terms:
The cube root of 8 is 2 and 2 squared is 4, and the square root of 4 is 2, so we can write:

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