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Polinomis 4t d'ESO

Authored by Jordi Roselló

Mathematics

4th Grade

Used 2+ times

Polinomis 4t d'ESO
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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. 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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