The answer is the second option.
You're going to need to be a bit more specific. What is it you're asking us?
Answer:
Step-by-step explanation:
The binomials are multiplied in the usual way, using FOIL or the distributive property:
(5 -2i)(3 -4i) = 15 -20i -6i +8i²
Since i² = -1, this becomes ...
= 15 -20i -6i -8 = 7 -26i
C
The two triangles are similar — that is, the three angles in triangle EDC correspond to those in ABC