algerba
posted by ant .
simplify: 5 / sqrt (7)  sqrt(2)
a) sqrt (7)  sqrt (2)
b) sqrt(7) + sqrt (2)
c) 5 sqrt((7) + sqrt (2))/ 9
d) 1

The way you typed it, none of these answers are correct,
BUT
if you mean
5/(√7  √2) then
5/(√7  √2)
=5/(√7  √2) * (√7+√2)/(√7+√™)
= (5√7 + 5√2)/5
= √7 + √2 
im truly sorry because i cant get how to write these square root correctly. but yes that what i meant the way yo wrote it and thanks so much for your help reiny. :)