Question 415980
yes..its exactly like  combining like terms...

for example,   5x + 6x = 11x


same way,    5 {{{sqrt(2)}}} + 6 {{{sqrt(2)}}} = 11 {{{sqrt(2)}}}


As you know that  3x + 4y cannot be added further as they are not like terms, the same is true for radicals too...for example,  3{{{sqrt(2)}}} + 4{{{sqrt(5)}}} cannot be added further....