Write a table with four rows as you described and at least 3 columns. Two columns are for values of p and q, and the third one is for the truth value of p v (p ^ q) for the given p and q. If you'd like, you may have an another column for the intermediate value of p ^ q.

Whether you have the fourth (or fifth) column depends on whether = in p v (p ^ q) = p is a connective (equivalence, or biconditional), just like v or ^, or whether it is a meta-level equality saying that the truth values of two formulas are always equal. If it is a connective, then the last columns must list the truth values of the whole formula p v (p ^ q) = p. (In this case, columns for subformulas p ^ q and p v (p ^ q) are optional.) This column is expected to have only T. If = is a meta-level equality, then you just inspect the columns for p and for p v (p ^ q) and observe that they are identical.