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多項式的加減&乘除

Authored by 陳 嘉卿

Mathematics

8th Grade

Used 26+ times

多項式的加減&乘除
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20 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

 (3-2x2+5x)+(-1+x2-5x)

-x2+3x
-x2+2
-3x2+4
-3x2+4x-1

2.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

(x2-3+5x)-(2x+x2)+(4x2+3)

6x2-2x+1
2x2-x+5
3x2+4x
4x2+3x

3.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

下列關於-4x2-7+6x2-x的敘述何者錯誤?

是x的二次多項式
常數項為7
x2項係數為2
x項係數為-1

4.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

若多項式A與(-2x3+3x2-6x+7)的和為2x2+x-1,則多項式A =?

 2x3-x2+7x-8
 3x2+x-5
-2x3+x2-7x+8
 -2x2+5x-3

5.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

若多項式(a-3)x2+(b+2)x+(c-5)是一次多項式,則下列何者錯誤?

a=3
b=-2
b≠-2
C為任意數

6.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

在多項式2-7x3+6x-5x2中,三次項係數為a,二次項係數為b,一次項係數為c,常數項為d,則a、b、c、d何者最小?

a
b
c
d

7.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

計算3x2-[(-2x2-4x-1)-(3x2-5x-6)],則x項係數是多少?

8
1
-1
-5

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