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Write the set builder form of A = {-1,1...

Write the set builder form of `A = {-1,1}`

A

A = {x :x is an integar }

B

A = {x:x is a root of the equation `x^(2)+1=0`}

C

A = { x :x is a real number }

D

A = { x:x is a root of the equation `x^(2) = 1` }

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The correct Answer is:
D
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