原帖由 stargazer713 於 2013-3-5 23:40 發表
唔係乘返square root of 14 over square root of 14 再汁好佢就係啦咩..
係唔係姐係The square of -5 over the square root of 2?
因為2乘7=14
加上-5乘7=-35
咁咪The square root of -35 over the square root of 14...
但系本教科書話係The square root of -10 over 2....