x(x^2y^2-xy)-y(x^2-x^3y)

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/04/30 20:08:58

x(x^2y^2-xy)-y(x^2-x^3y)
a^4-(1-a)(1+a)(1+a^2)
4x^3y+4x^2y^3+xy^3
8(a-b)^2+12(a-b)
a^2-2ab+b^2-c^2
若3^x=a,3^y=b,求3^2x-y的值

1.x(x^2y^2-xy)-y(x^2-x^3y)
=x^3 y^2 -x^2 y - x^2 y + x^3 y
=2x^3 y^2 -2x^2 y
=2x^2 y(x-1)
2.a^4 -(1-a)(1+a)(1+a^2)
=a^4 -(1-a^2)(1+a^2)
=a^4 -(1-a^4)
=a^4 -1+a^4
=2a^4 -1
3.这道题的第二项你好像打错了看下我写的对不对
4x^3y+4x^2y^2+xy^3
=4x^3 y +2x^2 y^2 +2x^2 y^2 +xy^3
=2x^2 y(2x+y)+xy^2(2x+y)
=(2x+y)(2x^2 y +xy^2)
=(2x+y)(2x+y)xy
4.8(a-b)^2+12(a-b)
=4(a-b)(2a-2b+3)
5.a^2-2ab+b^2-c^2
=(a-b)^2-c^2
=(a-b-c)(a-b+c)

[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y (x+y)(x-y)-(2xy+3y)平方化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 因式分解：x×x-xy-2y×y-x-y （x^2+xy/x-y)/（xy/x-y)计算 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y) （xy-x^2)乘以(xy)/(x-y) 作乘法:(x+y)(x^2-xy+y^2)；(x-y)(x^2+xy+y^2) x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y 急![(3x+y)²-3(3x-y)(x+y)-(x-3y)(x+3y)]÷(2xy) 2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分