Question

how do you do this? (11 - 7i) - (16 - 11i)

Answer 1

so = -5+4i

Answer 2

thank you so much

Answer 3

your welcome need anymore help

Answer 4

yes, how do you do this one (1+i)/(2-5i)?

Answer 5

(1-3i) / (2+5i)
Multiply top and bottom by (2-5i)
You get
(1-3i)(2-5i) ----> 2 - 11i + 15i^2 --------> 2 - 11i - 15 ----> -13 - 11i
divided by
(2+5i)(2-5i) ----> 4-(25)i^2 -----> 4 + 25 = 29

it comes out to (-13 - 11i) / 29

Answer 6

thats all i needed help with thanks for explaining it