how do you add square roots? for ex 4+ the square root of 18 - 3 the square root of 2i i is an imaginary #?

Question

4 t square root of 18 -3 square roots of 2i

Answer 1

Could you double check that problem once more? You can only add and subtract square roots that are identical or can be simplified to be identical and then you just add the coefficients (the numbers in front of the sqrt).

For example, 3 sqrt12 + 2sqrt 3.
Since the sqrt12 = 2sqrt3, the new problem is:
6sqrt3 + 2sqrt3 = 8sqrt3

Answer 2

i might be able to help you if you clarify the math