1.(x-3y)^2-x+3y-122.(a^2+a)(a^2+a-3)-43.2+9a-5a^2

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/13 18:59:34
1.(x-3y)^2-x+3y-122.(a^2+a)(a^2+a-3)-43.2+9a-5a^2

1.(x-3y)^2-x+3y-122.(a^2+a)(a^2+a-3)-43.2+9a-5a^2
1.(x-3y)^2-x+3y-12
2.(a^2+a)(a^2+a-3)-4
3.2+9a-5a^2

1.(x-3y)^2-x+3y-122.(a^2+a)(a^2+a-3)-43.2+9a-5a^2
1.(x-3y)^2-x+3y-12
=(x-3y)^2-(x-3y)-12
=(x-3y-4)(x-3y+3)
2.(a^2+a)(a^2+a-3)-4
=(a^2+a)^2-3(a^2+a)-4
=(a^2+a-4)(a^2+a+1)
3.2+9a-5a^2
=-(5a^2-9a-2)
=-(5a+1)(a-2)

1.（x+2)^2-(x+y)^32.(x-y)^2-(x-y)^33.(x-y)^2-(y-x)^3 x(x-y)2-(y-x)3 [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x 因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) 1.（x+y-z)+(x-y+z)-(x-y-z) 2.2x-(3x-2y+3)-(5y-2) [(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) 计算：x+2y/x-y+2x/y-x-3y/x-y 化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方 2X(2X-3Y)-3Y(X+Y) (-2x y)^2-(3y-x)(-x-3y) （x+2y)^2-(x+y)(3x-y) 计算(x+y)(x+y)^2(-x-y)^3 化简:5(x-y)+2(x+y)-3(x-y) 3x(x-y)+2y(x-y) 计算 化简3(x-y)-7(x--y)+2(y-x)