How do you simplify #4sqrt3+2sqrt3-5sqrt3#?
you can easily subtract or add the terms as they all have
It is like a variable, like let
So it goes,
= 6x -5x
you don't actually have to suppose but, you can add or subtract any terms containing same values under root.
Treat the radicals like variables, we can only add/subtract those of the same variable and degree
In the case of the question, all the involved radicals are the same.
So we can proceed to adding/subtracting them.