配方法-配平方(基礎)

配方法-配平方(基礎)

8th Grade

10 Qs

quiz-placeholder

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配方法-配平方(基礎)

配方法-配平方(基礎)

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

朱 朱

Used 4+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x2+14x+x^2+14x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

   (A) 28;+14  

(B) 49; +7

(C) 28;-14

(D) 49;  -7

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x2+8x+x^2+8x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

   (A) 16;+4  

(B) 16; -4

(C) 16;+8

(D) 16;  -8

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x26x+x^2-6x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

   (A) 12;+6  

(B) 9; -3

(C) 9;+3

(D) 12;  -6

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x25x+x^2-5x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

 (A)  252\frac{25}{2}  ;    5-5    

(B )  \frac{25}{2}  ;  52-\frac{5}{2}  

(C)  254\frac{25}{4} ;     +5+5  

(D)  254\frac{25}{4} ;   +52+\frac{5}{2}  

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x2+9x+x^2+9x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

  (A)  814\frac{81}{4}  ;  +92+\frac{9}{2}    

(B )  818\frac{81}{8}  ;  9-9  

(C)  818\frac{81}{8} ;   +92+\frac{9}{2}  

(D)  814\frac{81}{4} ;   +9+9  

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x27x+x^2-7x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

  (A)  492\frac{49}{2}  ;  72-\frac{7}{2}    

(B )  494\frac{49}{4}  ;  72-\frac{7}{2}  

(C)  492\frac{49}{2} ;   7-7  

(D)  494\frac{49}{4} ;   +7+7  

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

  x253x+x^2-\frac{5}{3}x+_{ }  ________ =(x         )2=\left(x\ \ \ \ \ \ \ \ \ \right)^2  

  (A)  2536\frac{25}{36}  ;  +56+\frac{5}{6}    

(B )  259\frac{25}{9}  ;  +53+\frac{5}{3}  

(C)  2536\frac{25}{36} ;   56-\frac{5}{6}  

(D)  259\frac{25}{9} ;   53-\frac{5}{3}  

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