关于A.xy2x2y2的百科

• 下列计算正确的是A．(x+y)2=x2+y2                                 ...

• 问题详情：下列计算正确的是A．(x+y)2=x2+y2                                             B．(－xy2）3=－x3y6C．x6÷x3=x2                                                   ...
• 2021-02-0115204