Posted by pat on Sunday, October 26, 2008 at 2:43pm.
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 classmatesâ€™ expressions. Detail what would have happened if the expression was not simplified first.

algebra  Damon, Sunday, October 26, 2008 at 2:52pm
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