(2+2i)(5+3i)
10+6i+10i+6i^2
10+16i+6(-1)
4+16i
When you have an “i^2”, you also have a negative one. The simplified answer is 4+16i
Nothing changes if you don't add anything.
Example:
10+10=20
20+0=20
nothing changes.
What’s the x your trying to find
