Question

2i (7−4i)
how do you distribute this??

Answer 1

You would distribute it as you would for 2*(7-4)
EXCEPT that i times i = -1.

Answer 2

i know the aswer is 8+14i but how does that changes from 14i-8i ?

Answer 3

2i (7−4i)
2i*7 - 2i*4i ===> I distributed the 2i to both sides
14i - 8*i*i
14i -8*(-1) ===> because i*i = -1
14i +8 ===> because -1 times -1 = +1

And that's the steps. :)

Answer 4

thank you :)

Answer 5

You're welcome!