[問題] 數學三題
1.(多選)已知a b c為實數,且x^4+ax^3+bx^2+c除以x^2-1得餘式為2x+1,除以x+2餘式為3
則(A) a+b+c>0 (B) b=c (C) a>b (D) a>c (E) a>b+c
只寫的出A對 另外四個選項不曉得該怎麼算QQ
2.設ax^8-bx^7+1可被(x-1)^2整除,則數對(a,b)=?
3.(1)設f(x)=(x^4-x^3-2x^2-2x+6)^10,則以x^2-3x+2除f(x)之餘式為?
(2)承上題(98979806)^10除以(99*98)之餘數
麻煩解惑QQ 感謝
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