A. Show that following equality holds A(BC+BC) = +(B+C)(B+C) B. Show that the statement forms-(p^q) and -p^-q are not logically equivalent. c. Determine whether the following argument form is valid or invalid by drawing a truth table, indicating which columns represent the premises and which represent the conclusion, and annotating the table with a sentence of explanation. P Var 9 par Pr D. Let D = {1, 2, 3, 4, 5), and consider the following statement, Please show that the following statement is true Vxe D, x2 > x