17. The length of the tangents from any point of the } circle }15x^2+15y^2-48x+64y=0 to the two } circles }5x^2+5y^2-24x+32y+75=0 , }5x^2+5y^2-48x+64y+300=0 are in the ratio }

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15 x^{2} + 15 y^{2} - 48 x + 64 y = 0

5 x^{2} + 5 y^{2} - 24 x + 32 y + 75 = 0,

5 x^{2} + 5 y^{2} - 48 x + 64 y + 300 = 0.

15 x^{2} + 15 y^{2} - 48 x + 64 y = 0

5 x^{2} + 5 y^{2} - 24 x + 32 y + 75 = 0, 5 x^{2} + 5 y^{2} - 48 x + 64 y + 300 = 0

15 x^{2} + 15 y^{2} - 48 x + 64 y = 0

5 x^{2} + 5 y^{2} - 24 x + 32 y + 75 = 0

5 x^{2} + 5 y^{2} - 48 x + 64 y + 300 = 0

y -

5 x^{2} + 5 y^{2} - 2 x + 6 y - 8 = 0

The equation of the circle whose centre is (1, -3) and which touches the line 2x-y-4=0 is

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