charliechen101 wrote:問 : 請將 (x+...(恕刪)
Redrum wrote:記不得公式就一步一步...(恕刪)
charliechen101 wrote:問 : 請將 (x+y)5 展開 ! (五次方) ...(恕刪)
charliechen101 wrote:問 : 請將 (x+y)5 展開 ! (五次方)....(恕刪)