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數學選擇題

Authored by 楊蕙禎 楊蕙禎

Mathematics

2nd Grade

數學選擇題
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27 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列敘述哪些是正確的?甲:81的平方根為±9 乙:-6是-36的一個平方根 丙:0的平方根為0 丁:4 2 =16,所以4是16的一個平方根

甲、乙

甲、丙

丙、丁

乙、丁

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

小於(-10.2)2的最大整數是多少?

105

104

-105

-104

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(-x+y)2與下列何者相等?

(x-y)2

-(x-y)2

-x2+y2

x2-y2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

展開(-a+3)(b-5)後,可得下列何者?

-5a+3b-ab-15

5a-3b-ab-15

5a+3b-ab-15

5a+3b+ab-15

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若多項式8x2-7的二次項係數是a,一次項係數是b,常數項是c,則a+b-c=?

1

7

-7

15

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若A為二次多項式,B為零次多項式,則3A-2B為幾次多項式?

零次

一次

二次

三次

7.

OPEN ENDED QUESTION

3 mins • 1 pt

若-3為3a+b+1的負平方根,且a+2b+3的平方根為±

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