谁会这道题:已知x 3m-2n-12 y
已知,单项式M,N满足2x(M+3x)=6x^2y^2+N,求M,N.
已知单项式M、N满足2x(M+3x)=6x^2y^2+N,求M、N.
已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N
已知,单项式M,N满足2x(M+3x)=6x²y²+N,求M,N
已知x^3m=8,y^3n=27,求(x^2m)^3+(y^n)^3-x^2m*y^n
2x^6n-x^4n×y^3m-y^9m,已知x^2n=3,y^3n=2,求值
已知单项式M N满足3x(M-5x)=6x^2y^2 求M N
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+3},N={(x,y)|y=-2x+6},则M∩N=______.
已知方程组:(m−n)x−3y=10 (1)4x+(3m+n)y=12 (2)
已知方程组{①(m-n)x-3y=10②4x+(3m+n)y=12将①×2-②能消x,将②-①能消y,则m、n的值为多少
已知方程组①(m-n)x-3y=10,②4x+(3m+n)y=12,将①*2-②能消x,将②+①能消y,则m,n的值为多