22, \(4y^2-2.2y.3+9+x^2-10x+25=\left(2y-3\right)^2+\left(x-5\right)^2\)
24, \(x^2-10x+25+9y^2-2.3y.2+4=\left(x-5\right)^2+\left(3y-2\right)^2\)
26, \(4y^2+2.2y.3+9+9x^2-2.3x.2+4=\left(2y+3\right)^2+\left(3x-2\right)^2\)
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giúp em với :3
