the radius of the circle 3 X square + 3 y square - 6 x + 4 y - 4 =0
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3x²+3y²-6x+4y-4=0
comparing the eqn with x²+y²+2gx+2fy+c=0
2g= -6 2f=4 c=-4
g=-3 f=2 c=-4
radius = √g²+f²-c
= √-3²+2²-(-4)
=√9+4+4
=√17 units
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