練習題庫/gsat・難度 5已知 f(x)=2(x−1)(x+1)(x−3)−3(x−1)(x+1)+5(x−1)+5f(x)=2(x-1)(x+1)(x-3)-3(x-1)(x+1)+5(x-1)+5f(x)=2(x−1)(x+1)(x−3)−3(x−1)(x+1)+5(x−1)+5。若將它改寫成 f(x)=a(x−3)(x+1)(x−1)+b(x−3)(x+1)+c(x−3)+df(x)=a(x-3)(x+1)(x-1)+b(x-3)(x+1)+c(x-3)+df(x)=a(x−3)(x+1)(x−1)+b(x−3)(x+1)+c(x−3)+d，且等式對所有實數 xxx 皆成立，則 (a,b,c,d)(a,b,c,d)(a,b,c,d) 為下列何者？(A)(2,−3,5,5)(2,-3,5,5)(2,−3,5,5)(B)(2,−4,1,−9)(2,-4,1,-9)(2,−4,1,−9)(C)(2,3,−1,−9)(2,3,-1,-9)(2,3,−1,−9)登入後即可作答並查看完整詳解（每日免費 5 題）。