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1. |
Let f(x, y) = 0 represents a circle, If f(0, a) has roots a = 2, 3 and f(a, 0) has roots \(a = 12, \frac 1 2,\) then the centre of the circle is: |
A. | \(\left(\frac {-5}2, \frac 1 6\right)\) |
B. | \(\left(\frac {4}{25}, \frac 2 5\right)\) |
C. | \(\left(\frac {2}{7}, 6\right)\) |
D. | \(\left(\frac {25}{4}, \frac 5 2\right)\) |
Answer» E. | |