解一元二次方程式

解一元二次方程式

8th Grade

10 Qs

quiz-placeholder

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解一元二次方程式

解一元二次方程式

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

黃馨嫺 黃馨嫺

Used 74+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x2+5x+6=0x^2+5x+6=0  

 x=2 or 3x=-2\ or\ -3  

 x = 2 or 3x\ =\ 2\ or\ -3  

 x = 5 or 6x\ =\ 5\ or\ 6  

 x = 2 or 3x\ =\ 2\ or\ 3  

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x27x18=0x^2-7x-18=0  

 x=2 or 9x=2\ or\ 9  

 x = 3 or 6x\ =\ 3\ or\ -6  

 x = 2 or  9x\ =\ -2\ or\ \ 9  

 x = 3 or 6x\ =\ -3\ or\ -6  

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 2x23x2=02x^2-3x-2=0  

 x=12 or 2x=\frac{1}{2}\ or\ 2  

 x = 12 or 2x\ =\ -\frac{1}{2}\ or\ 2  

 x = 12 or 2x\ =\ \frac{1}{2}\ or\ -2  

 x = 2 or 2x\ =\ 2\ or\ -2  

4.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x2+4x+21=0-x^2+4x+21=0  

 x=7 or 3x=-7\ or\ 3  

 x = 7 or 3x\ =\ 7\ or\ 3  

 x = 7 or 3x\ =\ -7\ or\ -3  

 x = 7 or 3x\ =\ 7\ or\ -3  

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x2+x+1=0x^2+x+1=0  

 x=1 or 1x=1\ or\ -1  

 x = 1()x\ =\ 1\left(重根\right)  

無解

 x=1()x=-1\left(重根\right)  

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x24=0x^2-4=0  

 x=2()x=2\left(重根\right)  

無解

 x = ±2x\ =\ \pm2  

 x=2()x=-2\left(重根\right)  

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 x24x+4=0x^2-4x+4=0  

 x=2()x=2\left(重根\right)  

 x=2()x=-2\left(重根\right)  

無解

 x=±2x=\pm2  

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