If $z=3+4i$, find $z^2$. (Note that $i^2 = -1.$)
Question:
If $z=3+4i$, find $z^2$. (Note that $i^2 = -1.$)
Answer:
Let's think step by step.

user
-7+24i
If $z=3+4i$, find $z^2$. (Note that $i^2 = -1.$)
train