Wednesday, 4 December 2013

algebra precalculus - Why is sqrt8/2 equal to sqrt2?




I am trying to help my daughter on her math homework and I am having some trouble on some equation solving steps. My current major concern relies on understanding why 8/2 equal to 2.



Thanks in advance


Answer



It isn't, as originally written. To see why the fixed version is correct, we have:



82=422=422=222=2.


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