若2∧x=m,2∧y=n,求2∧(x+y+2)的值
若2∧x=m,2∧y=n,求2∧(x+y+2)的值
2∧x=m 2∧y=n,求2∧x+y+2的值
若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3—x^2m·y^n·x^4m·y^2n的值
若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,
已知x,y是实数,集合M={x,y/x,1} N={x^2,x+y,0}若M=N,求x^2012+y^2012的值
已知x^3m=8,y^3n=27,求(2^2m)^3+(y^n)^3-x^2m*y^n的值.
已知集合M={(x,y)|y=x^2},N={(x,y)|y=2^x},求M∩N的元素个数为
已知集合M={y|y=2∧x,x>0},N={x|y=lg(2x-x²)},则M∩N为?
若(-5x^m+1×y^2-1)×(2x^n×y^m)=-10x^4y^4,试求m-n的值.x^3-2x[2x^2-3(
未知数X,Y满足(x^2+y^2)m^2-2y(x+n)m+y^2+n^2=0,其中m,n表示非零已知数,求x,y的值
(mx+y)(x-y)=2x的平方+nxy-y的平方,求m,n的值
已知x+y=负三,求(x+y)²-3x-3y+2的值 已知m+n=2mn,求代数式3m-2mn+3n分之m+2