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1) 27 is the same as multiplying three times three times three:
(1)
Now, the cube root of 27 can be written as:
(2)
Knowing the information given by (1) we can rewrite (2) as:
Applying the rule of exponents with the same base, which in this case is 3:
Finally:
2) We have the following expression:
That can be factored by taking the common factor, which in this case is 8:
Then:
