CÙNG NHAU VỀ ĐÍCH

CÙNG NHAU VỀ ĐÍCH

7th Grade

19 Qs

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CÙNG NHAU VỀ ĐÍCH

CÙNG NHAU VỀ ĐÍCH

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Thuý Nguyễn

Used 8+ times

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19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

P(x)=x3+12x74P\left(x\right)=x^3+12x^7-4 . Bậc của đa thức P(x)P\left(x\right) là

A. 7

B. 3

D. 10

D. 0

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 Q(x)=x3+12x712x7+15Q\left(x\right)=x^3+12x^7-12x^7+15  . Bậc của đa thức  Q(x)Q\left(x\right)  là

A.   7

B.   3

C.   17

D.   0

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Đa thức 0 có bậc là

A. 0

B. 1

C. 2

D. Không có bậc

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Chọn hai đa thức P(x) và Q(x) sao cho

P(x) + Q(x) = x2 + 1

A. P(x) = x2; Q(x) = x + 1

B. P(x) = x2 + x; Q(x) = x + 1

C. P(x) = x2; Q(x) = -x + 1

D. P(x) = x2 - x; Q(x) = x + 1

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 Q(x)=4x3+12x75Q\left(x\right)=4x^3+12x^7-5  và  P(x)=8x7+5x3+9P\left(x\right)=8x^7+5x^3+9  . Khi đó  Q(x)+P(x) Q\left(x\right)+P\left(x\right)\   là

 A.   20x7+9x34A.\ \ \ 20x^7+9x^3-4  

 B.   9x7+20x3+4B.\ \ \ 9x^7+20x^3+4  

 C.   20x7+9x3+4C.\ \ \ 20x^7+9x^3+4  

 D.   20x7+9x34D.\ \ \ 20x^7+9x^3-4  

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 A(x)=5x66x5+x2+1A\left(x\right)=5x^6-6x^5+x^2+1  và  B(x)=5x6+6x5+12x23B\left(x\right)=-5x^6+6x^5+12x^2-3  . Khi đó  A(x)+B(x)=A\left(x\right)+B\left(x\right)=  

  A.   10x6+13x2A.\ \ \ 10x^6+13x-2  

 B.   12x5+13x22B.\ \ \ 12x^5+13x^2-2  

 C.   13x22C.\ \ \ 13x^2-2  

 D.  13x2+4D.\ \ 13x^2+4  

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 A(y)=6y2+12y+9;A\left(y\right)=6y^2+12y+9;   B(y)=4y212y+6B\left(y\right)=4y^2-12y+6  .Tính  A(y)B(y)=A\left(y\right)-B\left(y\right)=  

 A.  2y212y+15A.\ \ 2y^2-12y+15  

 B.   2y2+24y+3B.\ \ \ 2y^2+24y+3  

 C.   2y2+3C.\ \ \ 2y^2+3  

 D.   2y2+15D.\ \ \ 2y^2+15  

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