化简(x²+xy+y²)(x²-xy+y²)=?

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/07/17 21:30:37

(x²+xy+y²)(x²-xy+y²)=[(x²+y²)+xy][(x²+y²)-xy]
=(x²+y²)²-(xy)²
=x^4+2x²y²+y^4-x²y²
=x^4+x²y²+y^4

计算：(xy-x²)×x-y/xy x²/xy-x/y [-xy/(x-y)²]²×(y²-xy/x)³ x/xy-y²与y/x²-xy 通分 X²+2xy+y²/xy乘x²-2xy+y²/xy+y²= x-y/x²÷x²-2xy+y²/xy*（xy-x²）化简2XY+(X-Y)² 计算：x²+2xy+y²/xy-y².x²-2xy+y²/xy+y&# 化简：[(x+y)²-(x-y)²]÷2xy 计算：（xy-x²）乘 x-y分之xy 化简(x²y-4y²)/(x²+4xy+4y²)*[(4xy)/(x-2y)+x 已知x:y=3:2,求(x²+3xy)/(xy+2xy)