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Autoavaluació polinomis

Authored by Francesc Badia pinto

Mathematics

3rd Grade

Used 2+ times

Autoavaluació polinomis
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10 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Indica quin és el valor numèric d’aquest polinomi per a x = -1:

 

x³ - 3x² - 5x + 4

3

5

7

9

10

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calcula:

(2x³ + 4x² - 3x + 4) + (x³ - 2x² + 5x - 1)

x³ + 2x² - 8x + 3

3x³ + 2x² + 2x + 3

3x³ + 2x² + 8x + 3

2x³ + 2x² + 2x + 3

Cap de les respostes anteriors

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calcula:

 

(x³ - 3x² - 5x - 3) - (x³ - 2x² + 5x - 1)

x³ - 5x² + 3

x³ - x² - 10x + 5

-x² - 10x - 2

-x² - 10x - 4

Cap de les respostes anteriors

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

2 · (2x³ + 3x² - 5x + 4) + 3 · (x³ - 2x² + 5x - 1)

7x³ + 5x + 5

x³ - 25x + 5

7x³ - 25x + 5

x³ + 5x² + 5x + 5

Cap de les respostes anteriors

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Quin és el grau del polinomi resultant d’aquesta suma?

 

(2x³ - 3x² - 5x + 4) + (-2x² + 5x - 1)

6

3

5

4

Cap de les respostes anteriors

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Indica el valor del coeficient a:

 

(-4x²) · (-3x³) · (xy³) = 12xªy³

3

4

5

6

7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calcula:

 

(2x - 4)·(3x - 1)

5x² - 10x + 4

5x² - 14x + 4

6x² - 10x + 4

6x² - 14x + 4

Cap de les respostes anteriors

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