How do you simplify #(3 + 4i) (3 + 4i)#?
1 Answer
Jun 7, 2018
Explanation:
Your first step would be just like if you multiplied together two binomials: factor out each to get a trinomial. If you use FOIL, it's easy: multiply the First terms, the Outer terms, the Inner terms, and the Last terms:
F:
O:
I:
L:
Sum these together, and you can get your halfway-simplified version:
We know that
Since standard imaginary form is