posted by pat on .
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.
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