Question

We think to do something why we forget to do?​

Answer 1

Answer:

just because that is not important much it because you don't wanna to do that thing

Explanation:

thanks

hope you are doing great

Answer 2

Explanation:

usual, prove it using the general heuristic that

X=YX=Y if and only if X⊆Y and X⊇Y.X⊆Y and X⊇Y.

In other words, take a generic element of A×(B−C)A×(B−C) and show that it also must be an element of (A×B)−(A×C)(A×B)−(A×C), and vice versa.