ayoismeisalex
06.03.2020 •
Mathematics
Quadrilateral A'B'C'D' is a reflection of quadrilateral ABCD over the x-axis. what is the length of A'D?
A, 6 unites
B, 4 unites
C, 3 unites
D, 7 unites
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Ответ:
- 10 + 11i
Step-by-step explanation:
note that i² = (
)² = - 1
given
3i² +
- 
= 3(- 1) +
- 
= - 3 + 11i - 7
= - 10 + 11i ← in the form a + bi