一道数学填空题:已知x²+y²+2x-6y+10=0,则2x²-3y+1=_______.
一道数学填空题:已知x²+y²+2x-6y+10=0,则2x²-3y+1=_______.
已知实数x,y满足x²-x+y=2,则3x-y的最小值为_______.
已知:x²y²-2x+6y+10=0则x+y=
问一道数学题:已知X²+2X+Y²-6Y+10=0,求X的Y次方
填空题1.已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=_______.2.已知x=1-t,y=2-3t,
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的
(1)已知x+y=6,x²-y²=5,求x-y的值(2)若x+y=3,x²+y²
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)
已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y
已知4x²+y²-4x-6y+10=0,求(2/3√9x+y²√x/y³)-(x
已知x²+4x+y²-2y+5=0,则x+y=