Math, asked by poojayadavlokes4397, 10 months ago

If (4,2) is a point on the circle x2+y2+2gx+2fy+c=0 which is concentric to x2+y22x+4y+20=0 then value of c is

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Answered by Anonymous

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The general equation of a circle is x2 + y2 + 2gx + 2fy + c = 0. ... family of circles, and is the equation of the family of concentric circles.......................

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