Y+1=-1/2(x-2)怎么转换成x-2y-4=0?
数学函数的转换y=-x²+2x+1 怎么转换成 y=(x-1)²+2≤2 怎么转换的? 求详细解答.
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
已知4x=9y求(1)x+y/y (2)y-x/2x
设x>1,y>0,若x^y+x^-y=2根号2,则x^y-x^-y等于
1980西安大地坐标系怎么转换成经纬度.1 x:4323181.94 y:33616063 2 x:4323305.83
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-(
已知x²+y²+5=2x+4y,求【2x²-(x-y)(x-y)】【(x+y-1)(x-y
[(y-2x)(-2x-y)-4(x-2y)²]*2y,其中x=1,y=2
X+Y=5.7 1/4X+2/5Y=4/5X 怎么解
先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y