The first and last one are similar
Answer:
53. ±6
51. 2
Step-by-step explanation:
According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.], in this case, evaluate everything in grouping symbols first, then evaluate the exponents to avoid confusion:

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Answer:
1, 3, 5, 7, 9
Step-by-step explanation:

n = 1:

n = 2:

n = 3:

n = 4:

n = 5:

Answer: 1, 3, 5, 7, 9
Answer: 72 108
Step-by-step explanation:
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