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Problem : 811/2 = ?

9

Problem : 271/3 = ?

3

Problem : (- 64)1/2 = ?

Does not exist -- we cannot take the square root of a negative number.

Problem : (172)1/2 = ?

17

Problem : (171/2)2 = ?

17

Problem : ((- 12)2)1/2 = ?

12

Problem : ((- 12)1/2)2 = ?

Does not exist--we cannot take the square root of a negative number.

Problem : 253/2 = ?

125

Problem : (100/81)1/2 = ?

10/9

Problem : 64-4/3 = ?

1/256
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