hello guys I am new to the forum and new in electronics too.. this one maybe is easy for some of you. I want to transform this in SOP form in order to get the most simplified expression using karnaugh maps. I just need help to get the sum of products form.,not the simplified one. Thank you!

(A+C).(A+'B.'C) (where ' means NOT)

 

The most basic and "no brainer" way I use in such cases, is to re-construct the truth-table from the expression and simplify it again, this time in SOP form.