a) \(x^2+10x+25+y^2+1+2y=\left(x+5\right)^2+\left(y+1\right)^2\)
b) \(x^2-2xy+2y^2+2y+1=\left(x-y\right)^2+\left(y+1\right)^2\)
c) \(x^2-6x+13+y^2+4y=\left(x-3\right)^2+\left(y+2\right)^2\)
d) \(4x^2+2y^2-4xy-2y+1=\left(2x-y\right)^2+\left(y-1\right)^2\)