
國中數學八年級總複習
Quiz
•
Mathematics
•
8th - 9th Grade
•
Hard
FaHui Xie
Used 2+ times
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
利用乘法公式判斷,下列等式何者成立?
(a+b)2=a2+2ab+b2
(a-b)2=a2-2ab+b2
(A) 2482+248×52+522=3002
(B)2482-248×48-482=2002
(C)2482+2×248×52+522=3002
(D) 2482-2×248×48-482=2002
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
化簡(4x2-5x+7)-(-2x2+x-4)之後,可得下列哪一個結果?
(A) 2x2-4x+3
(B) 2x2-6x+11
(C) 6x2-4x+3
(D) 6x2-6x+11
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
. 計算(2x-3)(3x+4)的結果,與下列哪一個式子相同?
(A)-7x+4
(B)-7x-12
(C) 6x2-12
(D) 6x2-x-12
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個選項中的等式成立?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
若多項式5x2+17x-12可因式分解成(x+a)(bx+c),其中a、b、c均為整數,則a+c之值為何?
(A) 1
(B) 7
(C) 11
(D) 13
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x=2 不是下列哪一個方程式的解?
(A) 3(x-2)=0
(B) 2x2-3x=2
(C)(x-2)(x+2)=0
(D) x2-x+2=0
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