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Find A and B if the following equation if of a circle : (Ax)^2 + (B+4)y^2 + (A-3)xy + 5x + 7y + 5 = 0
Find A and B if the following equation if of a circle : (Ax)^2 + (B+4)y^2  + (A-3)xy + 5x + 7y + 5 = 0

```
6 years ago bharat bajaj
IIT Delhi
122 Points
```							If the equation is of circle :xy term should be zero : A-3 = 0 , Hence A = 3The coefficient of x^2 and y^2 should be equal :A^2 = B + 4Hence, B = 5 , A = 3ThanksBharat BajajIIT Delhiaskiitians faculty
```
6 years ago
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