How do you add 3""^3sqrt(2)+5""^3sqrt(16)?

1 Answer
Oct 26, 2014

3root(3)(2)+5root(3)(16) needs to be simplified in order to add.In order to add radicals, index and radicand(inside the radical) need to be the same.

Here is how you add the expression:
3root(3)(2)+5root(3)(16)=
3root(3)(2)+5root(3)(8*2)=
3root(3)(2)+5(root(3)(8)*root(3)(2))=
3root(3)(2)+5*2*root(3)(2)=
3root(3)(2)+10root(3)(2)=
13root(3)(2)