在代数式a,0,a^2b,2x+3,-b^2c/2,3/m,3x-y/4,m+2/2,x^2y+1/y,25x^3y^2

在代数式a,0,a^2b,2x^2+3,-b^2c/2,3/m,3xy/4,m^2/2,x^2y+1/y,25x^3y^ (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( 分解公因式p(x-y)-q(y-x)(a+b)(a-b)-(b+a)10a(x-y)^2-5b(y-x)3p(m-2n) 下列各式添括号正确的是：( ) A.-x+y=-(y-x) B.x-y=-(x+y) C.10-m=5(2-m) D.3 设A={(x,y)|y=-2x+3,x,y∈R},B={(x,y)|y=(4-3m^2)x+1,x,y∈R},求A∩B≠ 已知【x+y】/【2x+2y】=x+y/2x+2y=1/2 则x,y满足的条件是 A |x+y|＞0 B m-3/m+1 设A=｛（x,y）|y=-2x+3,x,y∈R},B={(x,y)|y=(4m-3{m}^{2})x+1,x,y∈R}, (1)-m^2+2m-1/1-m^2 (2)y^2-2xy+x^2/x^2-y^2 (3)(x-y)^2(a+b)/(y 分解公因式：2(m-n)^2-m(m-n) x(x-y)^2-y（y-x)^2 18(a-b)^3-12b(b-a)^2 如果分式3x-6y/x+y=0,那么x,y 应满足 A、x=2y B、x≠-y C、x=2y且x≠-y D、x=2y且y 、 #define M(x,y,z) x*y+z main() { int a=1,b=2,c=3; printf("%