作业帮1、(x^2-4y^2)/(x^2+2xy+y^2)÷(x+2y)/(2x^2+2xy)
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/16 00:38:00
1、(x^2-4y^2)/(x^2+2xy+y^2)÷(x+2y)/(2x^2+2xy)
2、(2x)/(5x-3)÷3/(25x^2-9)×x/(5x+3)
2、(2x)/(5x-3)÷3/(25x^2-9)×x/(5x+3)
1、(x^2-4y^2)/(x^2+2xy+y^2)÷(x+2y)/(2x^2+2xy)
=(x+2y）（x-2y）/[(x+y)^2]÷(x+2y)/[2x(x+y)]
=(x+2y）（x-2y）/[(x+y)^2]×[2x(x+y)]/(x+2y)
=[2x(x-2y)]/(x+y)
2、(2x)/(5x-3)÷3/(25x^2-9)×x/(5x+3)
=(2x)/(5x-3)×[（5x-3）(5x+3)]/3×x/(5x+3)
=(2x^2)/3
=(x+2y）（x-2y）/[(x+y)^2]÷(x+2y)/[2x(x+y)]
=(x+2y）（x-2y）/[(x+y)^2]×[2x(x+y)]/(x+2y)
=[2x(x-2y)]/(x+y)
2、(2x)/(5x-3)÷3/(25x^2-9)×x/(5x+3)
=(2x)/(5x-3)×[（5x-3）(5x+3)]/3×x/(5x+3)
=(2x^2)/3
（xy-x^2)乘以(xy)/(x-y)
（x^2+xy/x-y)/（xy/x-y)计算
(x+y-2xy)(x+y-2)+(1-xy)²
(x^2-xy)y÷y-x/xy怎么做?
x-y/x²÷x²-2xy+y²/xy*（xy-x²）
计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2
因式分解：x×x-xy-2y×y-x-y
x^2y+4xy+4y
(x^-4y^)/(x^+2xy+y^)/(x+2y)/(2x^+2xy)
计算：(x+y/x-y)÷(xy+x^2)
作乘法:(x+y)(x^2-xy+y^2)；(x-y)(x^2+xy+y^2)
化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)