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3年数学 平方根で2次方程式を解く

Authored by Hajime BB

Mathematics

3rd Grade

Used 1+ times

3年数学 平方根で2次方程式を解く
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10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2=9x^2=9  の解をすべて選びなさい。

 x=9x=\sqrt{9}  

 x=3x=3  

 x=−3x=-3  

 x=4.5x=4.5  

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2=1x^2=1  の解をすべて選びなさい。

 x=1x=1  

 x=−1x=-1  

 x=−0.5x=-0.5  

 x=0.5x=0.5  

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2=10x^2=10  の解をすべて選びなさい。

 x=10x=10  

 x=−5x=-5  

 x=−10x=-\sqrt{10}  

 x=10x=\sqrt{10}  

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2−25=0x^2-25=0  の解をすべて選びなさい。

 x=−25x=-\sqrt{25}  

 x=5x=5  

 x=−5x=-5  

 x=25x=\sqrt{25}  

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2−12=0x^2-12=0  の解をすべて選びなさい。

 x=−23x=-2\sqrt{3}  

 x=23x=2\sqrt{3}  

 x=−12x=-\sqrt{12}  

 x=32x=3\sqrt{2}  

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 x2−18=0x^2-18=0  の解をすべて選びなさい。

 x=−23x=-2\sqrt{3}  

 x=23x=2\sqrt{3}  

 x=−9x=-9  

 x=32x=3\sqrt{2}  

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 3x2=123x^2=12  の解をすべて選びなさい。

 x=−4x=-\sqrt{4}  

 x=3x=3  

 x=−2x=-2  

 x=4x=4  

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