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Polynôme du second degré - Forme canonique et discriminant

Authored by Simon COVEZ

Mathematics

10th Grade

Used 5+ times

Polynôme du second degré - Forme canonique et discriminant
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6 questions

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1.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

 P(x)=x26x+4P\left(x\right)=x^2-6x+4  
Si a(xα)2+βa\left(x-\alpha\right)^2+\beta est la forme canonique de P(x)P\left(x\right) , quelle est la valeur de α\alpha ?  

(a)  

2.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

 P(x)=x26x+4P\left(x\right)=x^2-6x+4  
Si a(xα)2+βa\left(x-\alpha\right)^2+\beta est la forme canonique de P(x)P\left(x\right) , quelle est la valeur de β\beta ?  



(a)  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 P(x)=x26x+4P\left(x\right)=x^2-6x+4  
Quel est l'ensemble des solutions de l'équation  P(x)=0P\left(x\right)=0 ?

 {3+5;35}\left\{\sqrt{3}+5;\sqrt{3}-5\right\}  

 {3+5;35}\left\{3+\sqrt{5};3-\sqrt{5}\right\}  

 {35;3+5}\left\{-3-\sqrt{5};-3+\sqrt{5}\right\}  

 {35;3+5}\left\{-\sqrt{3}-5;-\sqrt{3}+5\right\}  

4.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Quelle est la valeur du discriminant de  x2x1 x^2-x-1\  



(a)  

5.

FILL IN THE BLANKS QUESTION

30 sec • 1 pt

Combien de solutions possède l'équation x2x1=0x^2-x-1=0 



(a)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Quel est l'ensemble des solutions de l'équation x2x1=0x^2-x-1=0 


 {3;2}\left\{3;-2\right\}  

 {1+52;152}\left\{\frac{1+\sqrt{5}}{2};\frac{1-\sqrt{5}}{2}\right\}  

 {152;1+52}\left\{\frac{-1-\sqrt{5}}{2};\frac{-1+\sqrt{5}}{2}\right\}  

 {15;1+5}\left\{1-\sqrt{5};-1+\sqrt{5}\right\}  

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