3m(x-y)—n(y-x)

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3m(x-y)—n(y-x)3m(x-y)—n(y-x)3m(x-y)—n(y-x)3m(x-y)—n(y-x)=3m(x-y)+n(x-y)=(x-y)(3m+n)

3m(x-y)—n(y-x)
3m(x-y)—n(y-x)

3m(x-y)—n(y-x)
3m(x-y)—n(y-x)
=3m(x-y)+n(x-y)
=(x-y)(3m+n)

3m(x-y)—n(y-x) 怎么计算(x-y)^m*(x-y)^(n+2)*(y-x)^3 (初二上)提公因式法分解因式:1.(x+y)^2-3(x+y) 2.3x(x-y)+2x(y-x)-y(x-y) 3.m^n(m-n)^2-2mn(n-m)^2 2y(x-y)^2-(y-x)^3过程具体!(1)2y(x-y)^2-(y-x)^3(2)(m-n)^3+m(n-m)^2-n(m-n)^2 已知集合M={(x,y)丨y=x+3},N={(x,y)丨y=-2x+6},则M∩N= x(m-n)²-y(n-m)² 若x^3y^m-1*x^m+n*y^2n+2=x^9y^9,则4m-3n=(). 计算:【(x-y)/(m-n)】的立方×【(n-m)/(y-x)】的四次方×【(2m-2n)/3y-3x】的平方 a(m+n)-b(m+n)(a+b)(a-b)-(b+a)m(a-3)-n(3-a)x(x-y)+y(y-x) 1.M={y/y=x²-2x-1},N={y/y=x²+2x+3},求M与N的交集2.M={(X,Y)/Y=X},N={(x,y)/y=2x-1},求M与N的交集3.M={x/y=根号(x-2)},N={x/y=根号(3-x)份之一},求M与N的交集 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+(_______) 提公因式法(过程)1、a(x-y)-b(x-y)2、a(x-y)-b(y-x)3、a(x-y)³-b(x-y)²4、4(x-y)³-8(y-x)²5、5(x-y)³+10(y-x)²6、6(m-n)³-12(n-m)7、m(m-n)+n(n-m)8、m(m-n 如果M(3,y)与N(x,y-1)关于y轴对称,则x+ y=_______ 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? 若单项式M,N满足2x(M+3x)=6*x*x*y*y+N,求M,N 如果x+y=m,x-y=n,那么2x-3y=( )这步是怎么算出来的, 化简:(-x+3y)^2(-m-n)^2