Question

...

Answer 1

8-4i+2i-i^2

8-2i-i^2

Answer 2

hint : i^2= -1

Answer 3

hints dont help me ^_^

Answer 4

(2 – i)(4 + i)
=2*4 + 2i -4i -i^2
=-i^2 -2i + 8

Answer 5

hmm then try to solve yourself and tell where you got stuck rather then getting whole answer ... then copy and paste..if you dont try u might not learn how its done.

Answer 6

I agree with the above, but sometimes I don't even know where to get started, henceforth, the need to see some problems done for you so that you can copy and translate the process over to other equations.

Answer 7

yes ^ true :D