rasv4799
08.10.2019 •
Mathematics
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Ответ:
Ответ:
b
Step-by-step explanation:
Ответ:
Draw the four points in a complex plane. From the drawing you can see that the lenght is 4i - (-3i) = 4i + 3i = 7i, and the width is 1 - (-2) = 1 + 2 = 3.
So, the area is 7 * 3 = 21.