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If the two circles x^2 + y^2 + 2gx + 2fy = 0 and x^2 + y^2 + 2g1x + 2f1y = 0 touch each other, then

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in Circles by (51.1k points)

If the two circles x2 + y2 + 2gx + 2fy = 0 and x2 + y2 + 2g1x + 2f1y = 0 touch each other, then

a. f1g = fg1

b. ff1 = gg1

c. f2 + g2 = f12 + g12

d. none of these

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1 Answer

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by (51.4k points)

Correct option is a. f1g = fg1

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