Second degré forme générale
Quiz
•
Mathematics
•
4th Grade
•
Hard
lorie forti
Used 2+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La forme générale est
a.(x-alpha)²+beta
ax²+ bx + c
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que vaut le b ?
4x² + 8x -2
4
8
-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dans l'équation
5x² + 20x = -23
Que vaut le c ?
5
20
-23
23
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Avec la forme générale on n'a pas directement le sommet ( alpha ; beta )
mais on sait que alpha =
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que vaut l'abscisse du sommet (alpha)
Dans 2x² + 20x + 3
-5
5
3
-10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que vaut l'abscisse du sommet dans
3x² + 20 - 60x
10
20
-10
-20
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3x² + 20 - 60x
1) Alpha = -b/2a = 60/ 6 = 10
2) On trouve beta en ...
Remplaçant tous les x par 10
Remplaçant tous les y par 10
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