
1STMG - polynômes degré 2
Quiz
•
Mathematics
•
1st Grade
•
Hard

Ph T
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12 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Indiquez les polynômes de degré 2:
f(x) = 1 + 2x / g(x) = 6
h(x) = 3 + 4x + x² / k(x) = 7 - x²
f
g
h
k
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Voici deux écritures pour un polynôme de degré 2:
A(x) = 2 + 3x + x²
B(x) = (x + 1) (x + 2)
Cocher les affirmations correctes:
A est une forme développée
A est une forme factorisée
B est une forme développée
B est une forme factorisée
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On considère f(x) un polynôme de degré 2.
On sait que 2 est une racine de f.
Alors on peut dire que:
f(2) = 1
f(2) = 0
f(2) ne peut pas se calculer
f(x)=(x-2)²
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Voici la forme développée d'un polynôme de degré 2:
f(x) = (x - 1) (x - 5)
Quelles sont ses racines?
1 et 5
0
impossible de dire
-1 et -5
1 et -5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Voici la forme développée d'un polynôme de degré 2:
f(x) = (x + 1) (x - 7)
Quelles sont ses racines?
1 et 7
0
impossible de dire
-1 et 7
1 et -7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Voici la forme développée d'un polynôme de degré 2:
f(x) = 5 (x - 3) (1 - x)
Quelles sont ses racines?
1 et 3
0
impossible de dire
-1 et -3
1 et -3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Voici la forme développée d'un polynôme de degré 2:
f(x) = 3 (x + 2) (x + 4)
Trouver rapidement sa forme factorisée:
(aide: regarder le terme en x²)
f(x) = x² + 18x + 24
f(x) = x²
f(x) = x + 15
f(x) = 3x² + 18x + 24
f(x) = 2x² + 18x + 24
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