
Polinomis 4t d'ESO
Authored by Jordi Roselló
Mathematics
4th Grade
Used 2+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcula el valor numèric de P(-2):
Calcula el valor numèric de P(-2):
P(x) = 2x7 + 4x5 + 3x2 + x – 9
389
-91
-115
-383
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcula, agrupant tot el que puguis:
(2x3 - 4x2 + 5x - 4) - (4x3 - 3x + 17) =
-2x3 - 4x2 + 2x + 13
-2x3 - 4x2 + 8x + 13
-2x3 - 4x2 + 8x - 21
-2x3 - 4x2 + 2x - 21
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcula, agrupant tot el que puguis:
(x2 - 2x) · (2x3 - 5x2 + 3x + 2)
2x5 - 4x4 + 13x3 - 6x2 - 4x
2x5 - 9x4 + 13x3 - 4x2 - 4x
2x5 - 4x4 + 13x3 - 4x2 - 4x
2x5 - 9x4 + 13x3 - 6x2 - 4x
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fes la següent divisió i indica el quocient i el residu:
(4x2 - 8x – 2) : (2x - 1)
Q = 2x - 3 i R = -5
Q = 2x - 5 i R = -3
Q = 2x2 - 5 i R = -7
Q = 4x - 3 i R = -3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fes aquesta divisió mitjançant Ruffini, indicant el quocient i el residu:
(2x5 – 6x3 – 3x2 – 5x + 2) : (x + 1)
Q = 2x4 + 2x3 + 4x2 + 2x + 6 i R = 6
Q = 2x4 - 2x3 - 8x2 + x - 6 i R = 3
Q = 2x4 - 2x3 - 4x2 + x - 6 i R = 8
Q = 2x4 + 2x3 - 8x2 + 2x - 6 i R = 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Factoritza i indica les arrels del següent polinomi:
x3 + x2 - 4x - 4
(x - 2) (x + 2) (x - 1)
Arrels: x = 2 ; x = -2 ; x = 1
(x - 2) (x + 2) (x + 1)
Arrels: x = 2 ; x = -2 ; x = 1
(x - 2) (x + 2) (x - 1)
Arrels: x = 2 ; x = -2 ; x = -1
(x - 2) (x + 2) (x + 1)
Arrels: x = 2 ; x = -2 ; x = -1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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