当x=-2,y=2/3时,求mx-2(x-1/3y²)+(-3/2x+1/3y²)的值.在做此题时,
当x=-2,y=2/3时,求mx-2(x-1/3y²)+(-3/2x+1/3y²)的值.在做此题时,
(2mx²-x²+3x+1)-(5x²+4y²+3x)的值与x无关,求2m&su
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
若(2mx²-x²+3x+1)-(5x²-4y²+3想)的结果与x无关,求2m&
数:(1)若代数式(mx²-x²+5x+1)-(3x²-2y²+5x)的值与x无
点P(x,y)在椭圆x²/4+y²=1上,1)求2x+3y的最大值;2)求(x-1)²+y
若多项式(2mx²-x²+3x+1)-(5x²-4y²+3x)的值与X无关.求2
若代数式(2mx²-x²+3x+1)-(5x²-4y²+3x) 的值与x无关求2
(2mx²-x²+3x+)-(5x²-4y²+3x)的值与x无关,求2m&sup
y=(x²+1)²/[(3x²+2)(2x²+3)],求最小值
已知x²+y²-4x+6y+13=0,求x²+2y/x²-3y²的值
求代数式3x²y+5x-0.5x²y+3.5x²y-2的值,其中x=1/5,y=7