已知a、b、c為常數，ax2＋3x＋5與2x2－bx－c的和為零次多項式，則下列敘述何者正確？(A) a＝－2，b＝3，c＝5 (B) a＝－2，b≠3 (C) a≠－2，b＝3，c＝5 (D)

問題詳情

5.已知a、b、c為常數，ax2＋3x＋5與2x2－bx－c的和為零次多項式，則下列敘述何者正確？
(A) a＝－2，b＝3，c＝5
(B) a＝－2，b≠3
(C) a≠－2，b＝3，c＝5
(D) a＝2，b＝3，c≠5

參考答案

無參考答案

內容推薦

若A為x的四次多項式，B為x的三次多項式，則A÷B的餘式，其次數不可能為下列何者？(A)三次(B)二次(C)一次(D)零次
若A為x的三次多項式，B為x的一次多項式，則A－B為x的幾次多項式？(A)四次(B)三次(C)二次 (D)一次
【題組】Which is true?(A) Lonnie is very sad today.(B) The red scooter is from Mike.(C) The toy car
【題組】What is “it” in the last line (最後一行)?(A) The green pencil case.(B) Lonnie’s school bag.(C) T
【題組】Which is NOT true about Wendy’s house?(A) There are three bedrooms.(B) There are many dining
【題組】Which is true(正確的)?(A) There is only one Formosan black bear at theTaipei Zoo.(B) Heitang is
四、閱讀測驗 I. I am tall when I am young. I am short when I am old. What am I?  when 當…的時候(A) A brus
A: How old is your grandpa? B: He is seventy. ________________ A: He is seventy, too.(A) Where i
A: Look! There is a small monkey on the horse’sback!B: ____________(A) Wow! It’s so cute.(B) Wha
A: Are they comic books?B: ____________(A) You are welcome. (B) Really?(C) Not bad, thank you. (

內容推薦