(x+y)a-(x-y)a 化简~
⑴x(a-x)(a-y)-y(x-a)(y-a)=
化简(-y-2/x)÷(x+2/y)的结果 【备用选项 A.-y/x B.-x/y C.x/y D.y/x 】 好了再加
通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y)
2(x-y)+a(x-y)因式分解
3a(x+y)-2b(x+y)=(x+y)(?)
因式分解a(x-y)+b(y-x)+c(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.x(x-y)+y(y-x)2.9(a-b)^2-16(a+b)^2 3.25(x-y)^2+10(y-x)+1
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
计算(1)x/x+y-x/x-y (2)a+2+4/a+2 (3)x^2-y^2/xy÷(x+y)
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