⑴x(a-x)(a-y)-y(x-a)(y-a)=
⑴x(a-x)(a-y)-y(x-a)(y-a)=
3a(x+y)-2b(x+y)=(x+y)(?)
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
2(x-y)+a(x-y)因式分解
通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y)
设集合A={(x,y)|y≥|x-2|,x>=0},B ={(x,y)|y
1.、已知线段x,y,如果(x+y):(x-y)=a:b,求x、y
1.设集合A={(x,y)|3x+y=1},B={(x,y)|a的平方乘以x+3y=a
分解公因式的题 x(a-x)(a-y)-y(x-a)(y-a)-ab(a-b)^2+a(b-a)^2a^3b-ab2ab
y=ln(x-√x^2+a^2)-arcsin(a/x) 求y' y=ln(x+√1+x^2) 求y‘
(x-A)*(B-y)=x^2-9xy+8y^2,求A,B
因式分解a(x-y)+b(y-x)+c(x-y)