Question

2) Which of the following is the empty set?
A) {x / x is a real number and X2 - 1 = 0)
B) {x / x is a real number and X2 + 1 = 0)
C){x / x is a real number and x2 - 9 = 0)
D) {x / x is a real number and x2 = x + 2)​

Answer 1

Answer:

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