85.6k views
2 votes
What's (6+5i)(6-5i) using the foil method

User Zach Mast
by
3.5k points

1 Answer

2 votes

Answer:

Explanation:


Remember:\\(a+b)(a-b)=a^2-b^2\\\\(6+5i)(6-5i)=6^2-(5i)^2=36-(-1)*25=36+25=61\\

User Onur Uslu
by
3.5k points