4x^2+y^2-4x-6y+10=04x²-4x+1+y²-6y+9=0(2x-1)²+(y-3)²=02x-1=0 y-3=0∴x=1/2 y=3(2\3x根号9x+y^2根号x/y^3)-(x^2根号（1\x）-5x根号y\x)=2x√x+√xy-x√x+5√xy=x√x+6√xy=1/2√(1/2)+6√(1/2...