Second degré forme générale

Second degré forme générale

4th Grade

20 Qs

quiz-placeholder

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Second degré forme générale

Second degré forme générale

Assessment

Quiz

Mathematics

4th Grade

Hard

Created by

lorie forti

Used 2+ times

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20 questions

Show all answers

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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