Answer:
raised to the second power: ^2
a^2 - b^2 + 2abi
Step-by-step explanation:
Let a = a + bi
Then, z^2 = (a + bi)^2
= a^2 + 2abi + (bi)^2
= a^2 + 2abi +(b^2)(i^2)
Since i^2 = -1,
z^2 = a^2 + 2abi - b^2
z^2 = a^2 - b^2 + 2abi
