Which of the following are true:

1.	Which of the following are true:
A.	1 and 2
B.	{x: x >3, x ?0} ? ?
C.	{x: x2-1= 0, x ?N} ? {-1, 1}
D.	{x: x2 - 4x + 3 = 0} = {1, 3}
Answer» B. {x: x >3, x ?0} ? ?

Discussion

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