{(x,y)|2x+3y=12,x∈N,y∈N+},用列举法表示U={x|x

若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,n的值 {(x,y)|2x+3y=12,x∈N,y∈N+},用列举法表示U={x|x 集合M={y|y=x²+2x-3,x∈R},集合N={y|y-2| 用列举法表示 集合{x|x=(-1)^n,n∈N}{y|y=-x^2+6,x∈N,y∈N}{(x,y)|y=-x^2+6,x∈N,y∈N} 集合{(x,y)/2x+3y=12,x属于N,y属于N+},用列举法表示?急 假设集合U={(x,y)|x∈R,y∈R },A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n x+y=m,x-y=n,那么2x-3y等于 x+y=m,x-y=n,那么2x-3y等于多少 已知M={(x,y)|y=-x^2+mx-1},N={(x,y)|y=-x+3,0 已知M={y|y=x²-4x+3,x∈R},N={y|y=-x²+2x+8,x∈R},求M∩N 答案是{y|-1≤y≤9} x-3y=2 3x=y 2x+y=2 -x+y=5m+4n=5 2m-n=12x+5y=5 3x-5y=10 提问:设全集U={(x,y)│x,y∈R},集合M={(x,y)│y-3/x-2=1},N={(x,y)│y≠x+1},求Cu（M∪N）等于 设全集I={(x,y)|x,y∈R}集合M={（x,y)|y-3/x-2=1},N={(x,y)|y≠x+1},则Ci(M∪N）等于? 3n【x+y】-x-y因式分解 x^n*y*(-x^2y^m) ★→有理数x,y适合关系式：x+|x|+y=10,|y|+x-y=12,求x,y的值.有理数x,y适合关系式：x+|x|+y=10,|y|+x-y=12,求x,y的值.已知m^2-mn=15,mn-n^2=-6,求3m^2-mn-2n^2. void fun(int x,int y) {x=x+y;y=x-y;x=x-y; printf(%d,%d,,x,y); } main() {int x=2,y=3; fun(x,y); privoid fun(int x,int y){x=x+y;y=x-y;x=x-y;printf(%d,%d,,x,y);}main(){int x=2,y=3;fun(x,y);printf(%d,%d ,x,y);} 设y=x(x-1)(x-2)(x-3)——（x-n）,则y^(n+1)=?