若|x-2|+(y-3x+1)的平方=0,则x=_________,y=_________.
已知3X-2Y=0,且X-1大于y,则X的取值范围为_________.
二次函数y=3x的平方-2x+1 的图像是_______,顶点是_________,对称轴是_________,它与y轴
8x的平方y-x的平方y=_________.
已知2x+5y-3=0,则4^x×32^y的值为_________.
已知x-2y=-3,则15-3x+6y=_________.
设实数x,y满足x^2+4y^2+2x-47+2=0,则x^2y+2x的值等于_________
若2x+3y=2003,则代数式2( 3x-2y ) -( x-y ) + (-x+9y )=_________ ;
若x+y=3,xy=2,则(5x+2)-(3xy-5y)=_________
1、 已知X+3=7-Y,则(x+y)^2-(3/2)^2=_________.
已知2log3[(x—y) / 2]=log3(xy),则x / y=_________.
1.(1)(x^2y-xy^2)÷(x-y)=_________.
1.已知x^2-4y^2=0,则分式(x^2-xy+y^2)/(x^2+xy+y^2)的值为_________.