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二次方程式ランダム練習

Authored by 吉里陸【数学】 吉里陸【数学】

Mathematics

9th Grade

Used 160+ times

二次方程式ランダム練習
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10 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt


 x2+3x10=0x^2+3x-10=0  

-5

-2

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

 2x23x2=02x^2-3x-2=0  

-2

 12-\frac{1}{2}  

 12\frac{1}{2}  

2

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt


 8x2+46x+45=08x^2+46x+45=0  

 92-\frac{9}{2}  

 52-\frac{5}{2}  

 94-\frac{9}{4}  

 54-\frac{5}{4}  

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt


 x24x+4=0x^2-4x+4=0  

-4

-2

2

4

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

 5x2225=05x^2-225=0  

 53-5\sqrt{3}  

 35-3\sqrt{5}  

 353\sqrt{5}  

 535\sqrt{3}  

6.

MULTIPLE SELECT QUESTION

1 min • 1 pt


 3(x5)2=273\left(x-5\right)^2=27  

2

4

6

8

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt


 x2+x4=0x^2+x-4=0  

 1172\frac{-1-\sqrt{17}}{2}  

 1172\frac{1-\sqrt{17}}{2}  

 1+172\frac{-1+\sqrt{17}}{2}  

 1+172\frac{1+\sqrt{17}}{2}  

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