Discrete Mathematics and its Application

Am not understanding , how to do the truth or Venn diagram to show a statement pv(q^r)is equivalent to (pvq)^(pvr). How can I show the statement is not equivalent to (pvq)^r.
I have to explain my answer in truth or Venn diagram, but my problem really is Word Problem, and that were I messup at? Please help. I need a step by step of what I'm suppose to do.

1. By "truth" do you mean a truth table? If so, just list the 8 rows and the 8 values of the functions, and it is easy to show which are equivalent.

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