若2^x+2^y+1-8=0,求4*2^x+1+2^y+4的值

已知x求^2+y^2-6x-8y+25=0求1/x-y /x+y/x^4-y^4 若(x+y)(x+y-1)-2=0,求x+y的值求 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 x-2y+3=0 求x^2-(4y+1)x+4y^2+8y 若x²-4xy+5y²-2y+1=0,求x,y 若实数x、y满足x平方+y平方-4x-2y+5=0,求根号8y-2x分之（根号x）+y 若实数X,Y满足x²+y²-4x-2y+5=0求√x+y/√8y-2x 若x*x+y*y=x+y-1/2,求x,y的值如题 1 已知x+y/y=7/3 求x+y/x-y等于什么2 若x+4/3=y+3/2=z+8/4 且x+y+z=12 求x、y、z的值 若|x+y-1|+（x-y-2)²=0,求代数式（x+2y)(x-2y）-（2x-y)(-y-2x)的值. 若|x-1|+|2x+4y|=0,求3x-2y 若|2x-4|+（2分之y-1-x）^=0,求x、y 若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,求x,y的值 已知x^2+4y^2-4x+8y+8=0,求x+y 求x ,y 9x^2+4y^2-12x-8y+8=0 x^2-x+y^2+2y+5/4=0 求x^-1+y^0 已知(3x+1)(3x-3)-3x+2)^2=-7,(y+7)(y-7)-y(y-7)=0,求8y^2-5y(-y+3x)+4y(-4y-5/2x)的值 若2x-3y=0,求5x+4y/3x-2y