Question

how adding and subtracting radicals and complex numbers is similar to adding and subtracting polynomials

Answer 1

you can only add and subtract "like terms"
for example, you can only add and subtract terms with the same exponents, the same number under the radical
with complex numbers, the like terms only refers to whether the number has an i in it

Answer 2

ohhh okay thank you

Answer 3

anytime :)