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smariedegray
07.03.2021 •
Mathematics
1. What is the center-radius form of a circle defined by xx2 + yy2 - 2xx + 4yy - 1 = 0?
A. (xx + 1)2 + (yy-2)2 = 6 C. (xx + 1)2 + (yy-2)2 = 8
B. (xx - 1)2 + (yy + 2)2 = 6 D. (XX - 1)2 + (yy + 2)2 = 8
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Ответ:
112
Step-by-step explanation:
2*7=14
14*8=112