Answer:

Step-by-step explanation:
The distance between points
and
is

Hence, the distance between points
and
is

By pascal triangle this second term should be
5s^4v<span />
(-5+i)/2i
multiply by i/i
(-5+i) *i = -5i +i^2 = -5i -1
2i*i = 2i^2 = 2(-1) = -2
(-1-5i)/-2
1/2 +5/2 *i
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