remainder thm

我以前考CE果時係咁寫既
Let f(x)=x^3-3x^2+3x-1(For example)
f(1)=1-3+3-1=0
∴(x-1)is a factor of x
∴f(x)=(x-1)(x^2-2x+1)
=(x-1)(x-1)^2
=(x-1)^3

係唔使刻意咁講出你用過remainder theorem，因為上面果D步驟以經展示左你係用左remainder theorem

學校考試其實寫左就好d...最少唔會比人扣你分...(marking scheme可能會因為呢句比1分)

做功課就睇你老師點要求...佢話要就要囉 = =

我個人認為寫左好d，因為清楚d，比人知道你點解咁做...唔寫既話唔識既人會睇到一頭霧水。

應該唔洗
f(x) = x^2 + x - 1
find remainder when f(x) is divided by (x - 2)
f(2) = 2^2 + 2 - 1 = 5
咁做法, 人家都知你用左 remainder thm, 唔需要再寫出黎
ok?