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Hi there! Only Jenna wrote an expression that is equal to Ms. Peterson's.


First we need to get rid of the parentheses.


Now we can collect the terms.


Now we can already see that Chris and Tom are in incorrect.

Finally, we also have a look at Jenna's expression.


Working out the parentheses in this expression gives us the following:


As we can see now, this equals the original expression (with worked out parentheses) and therefore Jenna is correct.