Question

If y = 1 + i, then y^3 − 3y^2 + ( ? ) -1= -i

Answer 1

Are you trying to find the (?)

Answer 2

yes please

Answer 3

If so, lets just make the ? = x, ok?
So, since you know what y equals (1+i), substitute it in the other formula. So where there is a y, put in 1+i. Get it?

Answer 4

Then just find x.

Answer 5

im kinda confused

Answer 6

i tried it and got 3+3i