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1

i^0

i

i^1

-1

i^2

-i

i^3

1

i^4

How to find i to any power.

Any number squared is equal to a positive i's value is equal to the value of the square root of -i. Any multiple of the four equals one.

complex conjugate

the value of 1 represented by the denominator of a complex fraction with opposite sign

How to solve (2i+3)/(9-i)

(2i+3)/(9-i)for the denominator you multiply by the conjugate and what u do to the bottom u have to do to the top then you distribute the bottom then the top then add like terms then you simplify. 21i+25/17

Foil, multiply everything.

How to multiply complex numbers, for example (2+i)(2i-3)

Combine like terms.

How to add and subtract complex numbers. (2-3i) - (4+6i)