Question

plesase help we have to simplify​

Answer 1

Answer:

{(3)³}-¹

= (3) ³*-¹

= (3)-³

= (1/3)³

Step-by-step explanation:

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Answer 2

Answer:

1/27

Step-by-step explanation:

(((7-4))³)-¹

first we solve the bracket

((3)³)-¹

now multiply the powers

3³×-¹

3-³

now inverse the fraction of 3 to make the power positive as the power cannot be negative

1/3³

now 3³=27 so

1/27 is your answer