Question

A=(x:x square =4 and 3x =9) is an empty set or null set
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Answer 1

Answer:

refer to the above pic.

l have posted that pic to let you know that empty set and null set is the same thing.

Step-by-step explanation:

now, according to the question. that set is empty set or you can also say that it's a null set, as both empty and null means the same.

hope your doubt is cleared...

Thanks...♥️