Question

A={2, 9 , 28 , 65 , 126} in set builder form
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Answer 1

Given : D={2,9,28,65,126}

To Find : write it in set builder form​

Solution:

2 = 1³ + 1

9 = 2³ + 1

28 = 3³ + 1

65 = 4³ + 1

126 = 5³ + 1

x³  + 1    ,  1 ≤ x ≤ 4

Set builder form

{ x³  + 1 :  x ∈ N ,  1 ≤ x ≤ 5}

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