3年数学 ルートの代入

3年数学 ルートの代入

3rd Grade

5 Qs

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3年数学 ルートの代入

3年数学 ルートの代入

Assessment

Quiz

Mathematics

3rd Grade

Medium

Created by

Hajime BB

Used 1+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x=3+2x=\sqrt{3}+\sqrt{2}  
 y=32y=\sqrt{3}-\sqrt{2} のとき
 x2+2xy+y2x^2+2xy+y^2  の式の値は? 

 1212  

 88  

 44  

 1818  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x=3+2x=\sqrt{3}+\sqrt{2}  
 y=32y=\sqrt{3}-\sqrt{2} のとき
 x2y2x^2-y^2  の式の値は? 

 464\sqrt{6}  

 55  

 5\sqrt{5}  

 11  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 a=3+5a=3+\sqrt{5}  のとき
 a26a+9a^2-6a+9  の式の値は? 

 55  

 2525  

 5-5  

 25-25  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 a=3+5a=3+\sqrt{5}  のとき
 a24a+3a^2-4a+3  の式の値は? 

 5+255+2\sqrt{5}   

 10-10  

 10-\sqrt{10}  

 757\sqrt{5}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 a=24a=\sqrt{2}-4  のとき
 a2+8a+16a^2+8a+16  の式の値は? 

 22  

 44  

 4\sqrt{4}  

 424\sqrt{2}