perfect square and imaginary numbers

if the remainder of exponent divided by 4 = 1

i

if the remainder of exponent divided by 4 = 2

-1

if the remainder of exponent divided by 4 = 3

-i

if there is no remainder of exponent divided by 4

1

complex number

a+bi

what is the complex conjugate

change sign before bi

to simplify a fraction with complex numbers

multiply by the conjugate over the conjugate

how to get value c when completing the square (add to both sides!)

(b/2) squared

does b include the x value next to it?

no, it does not