U2. POLINOMIS
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Easy
Sonia Dominguez
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pel Teorema del Residu comprova si és veritat o no que x = 3 és arrel de P(x) = 6x5-19x4+4x3-8x2+7x-6
No és arrel perquè el residu és -30
No és arrel perquè el residu és 25
És arrel perquè el residu és 0
No és arrel perquè el residu és -45
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pel Teorema del Residu comprova si és veritat o no que x = -4 és arrel de:
P(x)= 2x6+12x5+11x4-25x3-19x2-2x-23
És arrel perquè el residu és 0
No és arrel perquè el residu és 1
No és arrel perquè el residu és -5
No és arrel perquè el residu és 8
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pel mètode de Ruffini busca les arrels del polinomi:
P(x) = x3+3x2-6x-8 i la seva factorització.
P(x) = (x+1)(x-2)(x+4)
Les arrels són x=-1, x=2, x=-4
P(x) = (x-2)(x+2)(x-3)
Les arrels són x=2, x=-2, x=3
P(x) = (x+1)(x-2)(x+4)
Les arrels són x=1, x=-2, x=4
No es pot factoritzar
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pel mètode de Ruffini busca les arrels del polinomi:
P(x) = x4+x2-20 i la seva factorització.
P(x) = x(x-2)(x+3)
Les arrels són x=0, x=2, x=-3
P(x) = (x-2)(x+2)(x2+5)
Les arrels són x=2, x=-2
P(x) = (x-2)(x+2)(x+5)
Les arrels són x=2, x=-2, x=-5
No es pot factoritzar
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Calcula la potència del binomi: (2x - 1)3
7x3-2x2+x-1
17x3-22x2+10x-15
8x3-12x2+6x-1
x3-x2+x+1
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Fes la potència: (x + 2)4
x3+24x2+32x+16
x5+8x4+24x3+2x
x4+8x3+24x2+32x+16
5x4+24x3+16x2+2x+1
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Escriu com una identitat notable les expressions següents:
a) 4a2+12a+9
b) 4x2-25
c) 4x2-4x+1
d) x2+5x+25
a) (2x-1)2
b) No és possible
c) (x+3)(x-3)
d) (2x+1)2
a) 6a+3)2
b) (x+5)(2x-5)
c) No és possible
d) (2x-1)2
a) (x+2)(2x-2)
b) (x+5)(2x-5)
c) No és possible
d) (x+5)2
a) (2a+3)2
b) (2x+5)(2x-5)
c) (2x-1)2
d) No és possible
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