im trying get equation circle standard form original problem reads x2

Im trying to get the equation of a circle in standard form. The original problem reads X^(2) + Y^(2) 4X 10Y + 4 = 0 I’ve gotten the problem down to (X^(2) 4x ____) + (Y^(2) 10y ______) = 4 where do I go from here?
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