add sqrt 2 + sqrt 8
no way without first saying
sqrt 8 = sqrt (4*2) = 2 sqrt 2
then we have sqrt 2 + 2 sqrt 2 = 3 sqrt 2
Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify. Consider participating in the discussion by simplifying your classmates’ expressions. Detail what would have happened if the expression was not simplified first.
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