若2x+5y=3,求4^x32^y的值
若2x+5y-3=0,求4^(x-1)X32^(y)的值.
已知3X+5Y=3,求8的X次方X32的Y次方
几个英语和数学若2的A方+2X3的A方+2等于36的A方-1,则A等于?若2X+5Y-3=0,则4的X方X32的Y方等于
若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值
若x、y、z满足2x+3y+z=18,4x-3y+5y=24,求x+3y的值.
若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,求x,y的值
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
1.已知:x-2y=3,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除4x 的值
已知x-2y=2011,求[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷4x的值.
若2lg(x-3y)=lgx+lg(4y)求x/y的值
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.
若X/3=Y/4=Z/5,求(X+Y)/(X-2Y+3Z)的值