Q: If the equation x² + y² +(c – 2)xy – 4x – 4y + c² = 0 represents a circle, then its radius is यदि समीकरण x² + y² + (c – 2)xy – 4x – 4y + c² = 0 एक वृत्त निरूपित करें, तो इसकी त्रिज्या है
A.
1
B.
2
C.
3
D.
5
Correct Answer:
Option B -
Explanations:
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