Question

(A-B)-C=(A-C)∩(B-C) ​

Answer 1

Answer:

A²-C³-B²

Explanation:

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Answer 2

Answer:

let take the setA ={123},setB={456}and set C={789} .

Then we can prove this by solving into two forms I,e LS &RS.

LS=(A-B)-C= ({123}-{456})-{789}=(phi) -{789}= phi {since of there is no common elements between the set}

RS= (A-C)intersection (B-C)= phi intersection phi = phi

Therefore LS =RS

if u can reached this,you may have for long