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Which of the following is the empty set...

Which of the following is the empty set

A

{x : x is a real number and `x^(2)-1= 0`}

B

{x : x is a real number and `x^(2)+1= 0`}

C

{x : x is a real number and `x^(2)- 9= 0`}

D

{x : x is a real number and `x^(2)= x+2`}

Text Solution

Verified by Experts

The correct Answer is:
B
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