Question

Radical 7 + Radical 7 over 3 (pic included if you have no clue what I mean) Please show work?

Answer 1

You need a common denominator. So multiply the \[\sqrt{7} \times 2/2\]

So now you have \[2\sqrt{7}/2 + \sqrt{7}/2\]
Factor out the \[\sqrt{7}\] So now you have \[\sqrt{7}(2+1)/2\]
That reduces to \[3/2\sqrt{7}\]