10．已知方程式＝0的兩根為a、b，則a＋b =____________。 

編輯私有筆記及自訂標籤國二數學上第三次-108 年 - 2019彰化縣縣立埔心國中八年級108 上學期數學第三次段考(期末考)翰林#89429
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點擊查看答案 參考答案 答案：A 難度：適中0.570348 統計：A(377),B(114),C(69),D(18),E(0) 關閉 內容推薦 阿信帶500元去買每本x元的作業簿，買(x＋3)本，並找回40元。依題意可列出下列哪一個方程式？(A)x(x－3)＝500－40 (B)x(x－3)＝500＋40(C)x(x＋3)＝500＋40 下列方程式中，何者的解是無解？(A) 9x2-6x+1=0 (B) 2x2-2x+4=0(C) x2+4x-4=0 (D) x2-9=0 。 一直角三角形的斜邊長為20公分，兩股差為4公分，則此直角三角形的面積為？(A)86 (B)90 (C)96 (D)100 若方程式(x－8)2＝36，則此方程式的解為何？(A)2和 (B)－2和 (C)2和－ (D)－2和－14 下列哪一個選項為方程式18x2-21x+5=0的兩根？(A) 　　 (B) 　　(C) 　 (D) 下列有關解方程式2x2＋3x＋1＝x2－1的步驟，何者開始發生錯誤？(A)因式分解得(2x＋1)(x＋1)＝(x＋1)(x－1)(B)消去x＋1得2x＋1＝x－1(C)移項得2x－x＝－1－1(D 判斷一元二次方程式x2－8x－a＝0中，a為下列哪一個數時，可使此方程式的兩根皆為整數？ (A) 　　(B) 　　(C) 　　(D) 24 x＝3不是下列哪一個方程式的解？(A)3(x－3)＝0 (B)x2－2x＝3 (C)(x－3)(x＋3)＝0 (D)x2－x＋3＝0 若91x2＋25x－6可因式分解成 ( 13 x－a ) ( b x＋c )，其中a、b、c均為整數，則下列敘述何者正確？(A) a＝　 (B) b＝　 (C) c＝－　 (D) a 【題組】Which is true?(A) Mr. Wang has a daughter.(B) Mr. Wang doesn’t have a pet.(C) Mr. Wang’s dau 內容推薦 Q: ________ is Tim? A: He is seventeen years old.(A) Who (B) Where (C) What time (D) How old Q: ________ is Owen from? A: He is from the States.(A) Who (B) Where (C) What time (D) How old Q: ________ is it? A: It’s four twenty.(A) Who (B) Where (C) What time (D) How old Q: How are you doing? A: _________(A) Good night, Juliet. (B) Nice to meet you, too. (C) I’m doi Q: Nice to meet you. A: __________(A) Good night, Juliet. (B) Nice to meet you, too. (C) I’m doi Q: Is it a duck? A: _________ It’s a goose.(A) Yes, it is. (B) No, it’s not. (C) Yes, we are. (D Q: Look at the picture. _________ A: It’s a small dog.(A) Is it a dog? (B) Is the dog small? (C) The _________ are so cute!(A) mice (B) goose (C) clerk (D) actress Q: What’s Postcrossing? Is it easy? A: Yes, it is __________.(A) a smart cookie (B) a short stor The bag is __________, not clean.(A) dirty (B) famous (C) strong (D) beautiful Q: What are those? A: __________(A) Yes, it’s a book. (B) No, they are fish. (C) They are clean. Q: _________ is the girl in the photo? A: She’s my sister, Tina.(A) How (B) Who (C) What (D) Wh Q: What time is it now? A: It is __________.(A) ten (B) twenty-five (C) one sixty (D) nine thirt 【題組】(A) old 　 (B) years　 (C) year old (D) years old 【題組】(A) shows (B) colors　 (C) points (D) footprints 【題組】(A) easy (B) strong　 (C) young 　 (D) touching 【題組】(A) is (B) are 　 (C) can　 (D) maybe 【題組】Which is NOT right?(A)Tony is Peter’s father. (B) Davis is Judy’s grandfather.(C)Lucy is Kevi 【題組】Who is a teacher from the UK?(A) Roger. (B) David. (C) Sakura. (D) Tanya. 【題組】Which is right?(A) Tracy and David are from the States. (B) Roger and Tanya are students.(C) Mary wants ______a famous singer in the future.(A) to become (B) become(C) became (D) becomes ______ “I love you” to my parents isn’t easy for me.(A) To saying (B) Saying (C) Said (D) Says A: What were these students doing______ ?B: They were watching a play about a queen andher soldie ______ new books______ really happy for kids.(A) Buying; are (B) Buy; is(C) To buy; are (D) Buying I want to thank you all______ inviting me here.(A) with (B) for (C) at (D) of