Question: Please correct my proof & give feedback so I can get better . It is of no use to only give me the answer. I

Please correct my proof & give feedback so I can get better. It is of no use to only give me the answer. I need an explanation more than an answer:)

Let A, B CW. Then ( AUB ) CA if only it BC ( An B P Assume pis true * Q is to be proved " let x EB. Her XE ( A UB ) @ XE A or XEB () case 1 : ixEA, then XE AXEB, : XE ( AnB ) case 2: but what if XEB? 5 if XEB, X E ( AUB) which byassumption p, & A ->: XEB & X EA :. XE ( AnB ) QED

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