x^m.y.(-2x^3y^n)^2=4x^7y^7,求：m、n求求你们了,谢谢

4x^(m+6)y^2+X^3y^n=单项式,m^n= 计算：1.[(m+n)(n-m)-(m+n)^2+3m(m+n)]除以（-2M),其中m=-4,n=2 2.(x+y)(-x+y)-(x-y)^2-(X^2y-xy^2)除 x^n*y*(-x^2y^m) 2m+n 5 3 2m-n诺4x y 与x y 是同类项,m/n= 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 已知集合M={(X,Y)Y=X-3},N={(X,Y)|2X-Y+4=0},那么M∩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 若x^3y^m-1*x^m+n*y^2n+2=x^9y^9,则4m-3n=（）. 2x^6n-x^4n×y^3m-y^9m,已知x^2n=3,y^3n=2,求值 因式分解：3m[(2x+n)(2x-n)+y(y-4x)] (x+y)(m+n)2-(x+y)(m+n)2 数学计算填空(5x+y)(5x-y)(5x+y)(-5x+y)(5x+y)(-5x-y)(5x+y)(x-5y)(x ^m+y ^n) （y ^n- x^ m)(x ^m+2y-3x^3)²(x-2y）(______)=4y²-x²(__________)²=m²-2m+1（只需要写一个代数式）(__________+3)²=4x²+(_______) 已知集合M={（x,y)|y=-x^2+2x},N={(x,y)|y=2x^2-4x},则M∩N=? X^3*y^(m-1)*x^(m+y)*y^(2n+2)=x^9y^9 m(x-y)^n+n(y-x)^2n因式分解 x-3y=2 3x=y 2x+y=2 -x+y=5m+4n=5 2m-n=12x+5y=5 3x-5y=10 解关于x,y的方程2x+3y=m.4y+5y=n