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y^2-9(x+y)^2.a(x-y)-b(y-x)+c(x-y)..x（m+n)-y(n+m)+(m+n)..(x+y

来源：学生作业帮 编辑：神马作文网作业帮 分类：数学作业 时间：2024/11/14 09:19:42
y^2-9(x+y)^2.a(x-y)-b(y-x)+c(x-y)..x（m+n)-y(n+m)+(m+n)..(x+y)^2-16(x-y)^2
因式分解
y^2-9(x+y)^2.a(x-y)-b(y-x)+c(x-y)..x（m+n)-y(n+m)+(m+n)..(x+y
(1) y^2--9(x+y)^2=[y+3(x+y)][y--3(x+y)]
=(y+3x+3y)(y--3x--3y)
=(3x+4y)(-3x--2y)
=--(3x+4y)(3x+2y).
(2) a(x--y)--b(y--x)+c(x--y)=(x--y)((a+b+c).
(3) x(m+n)--y(m+n)+(m+n)=(m+n)(x--y+1).
(4) (x+y)^2--16(t--x)^2=[(x+y)+4(y--x)][(x+y)--4(y--x)]
=(x+y+4y--4x)(x+y--4y+4x)
=(5y--3x)(5x--3y).
a(x-y)-b(y-x)+c(x-y) x(m+n)-y(n+m)+(m+n) m(x-y)+n(y-x) (x+y)(m+n)2-(x+y)(m+n)2 (m+n)(x-y)-(m+n)(x+y)的答案 (m+n)(x-y)+(m-n)(y-x) (m+n)(x-y)-(m+n)(x+y)的结果 把下列各式因式分解(2m+3n)(2m-n)-4n(2m-n)(x+y)^2(x-y)+(x+y)(y-x)^24a(x 若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m, 已知集合A={（x,y)|x-y+m=0},B={(x,y)|y=√9-x^2}.M交N元素个数 分解公因式 1.a(x+y)-b(x+y) 2.m(a-b)-n(b-a) m²（x-y)+n²（y-x) 一、因式分解1.x(x+y)(x-y)-x(x+y)^22.(a+b)(a-b)-(b+a)3.(m+n)^2-n^24