Question

how do simplify (2+4i) + (4-i) ?

Answer 1

combine like terms...
2+4 +4i -i

Answer 2

6+3i

Answer 3

add the real part 2+ 4 = 6
add the imaginary part 4i +(-i) = 3i giving

6 + 3i

Answer 4

+1 * n = n

-1 * n = -n

so a +(...) is just a useless waste of the paranthesis