y=(12-x² )(4-x)² -2√3
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
x²+4y²-2x+12y+10=0求X,Y值
4/X+1/Y=2,XY=-1,求代数式4Y-X/X-2Y/(x+2y-12Y²/x-2y)的值
已知x/y=2,求2x(x+y)-y(x+y)/4x²-4xy+y²
4x+5y=105,2x+3y=178,x,y等于
已知x²+y²+5=2x+4y,求【2x²-(x-y)(x-y)】【(x+y-1)(x-y
已知x²+|y+x|=x-1/4,求(3x+y)²(2x-y)²-(4x²+y&
已知x,y为实数,且y=√2x-3+√3-2x+2x,求4x-y²的绝对值
已知4x²-9y²=12,2x-3y=3,求x,y 谢谢啦
已知2x-3y=-4,求4x²+8x+12y-9y²的值