Polinomis ESO4

Polinomis ESO4

10th Grade

10 Qs

quiz-placeholder

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Polinomis ESO4

Polinomis ESO4

Assessment

Quiz

Mathematics

10th Grade

Medium

Created by

JOAN MAS

Used 8+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Calcula el valor numèric del polinomi

 P(x)=3x3+9x28x4P\left(x\right)=3x^3+9x^2-8x-4  
per a x=1 i x= 0

P(x=1) = 16
P(x=0) = -4

P(x=1) = 16
P(x=0) = 0

P(x=1) = 0
P(x=0) = -4

P(x=1) = 7
P(x=0) = -12

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Donats els polinomis

 P(x)=8x4+2x28x4P\left(x\right)=8x^4+2x^2-8x-4  i  Q(x)=x32Q\left(x\right)=x^3-2 
calcula P(x)·Q(X)

 8x7+2x524x44x34x2+16x+88x^7+2x^5-24x^4-4x^3-4x^2+16x+8  

 8x7+2x5+8x44x3+4x216x88x^7+2x^5+8x^4-4x^3+4x^2-16x-8  

 8x7+2x524x48x2+16x+88x^7+2x^5-24x^4-8x^2+16x+8  

 8x7+4x6+2x524x44x34x2+16x+88x^7+4x^6+2x^5-24x^4-4x^3-4x^2+16x+8  

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Donats els polinomis A(x)=x3+2x2+3A\left(x\right)=x^3+2x^2+3  i  B(x)=4x25B\left(x\right)=4x^2-5  , 
calcula  A(x)B(x)A\left(x\right)-B\left(x\right)  

 x3+6x22x^3+6x^2-2  

 x32x2+8x^3-2x^2+8  

 x3+6x2+8x^3+6x^2+8  

 x32x2+3x5x^3-2x^2+3x-5  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Aplica la regla de Ruffini per a calcular el quocient i el residu de la següent divisió:


 (2x3+3x2):(x+1)\left(2x^3+3x-2\right):\left(x+1\right)  

Quocient:  2x2+32x^2+3   | Residu: 2-2  

Quocient:  2x2x   | Residu:  x2x-2  

Quocient:  2x2+2x+52x^2+2x+5   | Residu: 3

Quocient:  2x22x+52x^2-2x+5  | Residu: -7

5.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Troba el valor de k perquè la divisió següent sigui exacte

 (x3kx2):(x+1)\left(x^3-kx-2\right):\left(x+1\right)  


(en la casella introdueix només el valor de k)

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Factoritza el polinomi següent:

 x3+4x2+x6x^3+4x^2+x-6  



 (x1)(x+2)(x+3)\left(x-1\right)·\left(x+2\right)\cdot\left(x+3\right)  

 (x1)(x+1)(x+3)\left(x-1\right)·\left(x+1\right)\cdot\left(x+3\right)  

 (x1)(x2+5x+6)\left(x-1\right)\cdot\left(x^2+5x+6\right)  

No es pot factoritzar, és irreductible.

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Factoritza el polinomi següent:

 x46x3+3x2+10xx^4-6x^3+3x^2+10x  



 x2(x5)(x2)x^2\cdot\left(x-5\right)·\left(x-2\right)  

 x(x5)(x2)(x+1)x\cdot\left(x-5\right)·\left(x-2\right)\cdot\left(x+1\right)  

 x(x1)(x+1)(x+5)x\cdot\left(x-1\right)·\left(x+1\right)\cdot\left(x+5\right)  

No es pot factoritzar, és irreductible.

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