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10b - Þáttun þríliðu II
Contributed by: Sverrisson
  • 1. Þáttaðu x2 - 4x - 12
A) (x - 6)(x + 2)
B) (x + 3)(x - 4)
C) (x - 2)(x + 6)
D) (x - 3)(x + 4)
  • 2. Þáttaðu x2 + x - 30
A) (x + 6)(x - 5)
B) (x - 6)(x + 5)
C) (x + 2)(x - 15)
D) (x - 2)(x + 15)
  • 3. Þáttaðu x2 - 64
A) (x - 8)(x + 8)
B) (x + 8)(x + 8)
C) (x - 8)2
D) (x - 8)(x - 8)
  • 4. Þáttaðu x2 - 10x + 25
A) (x - 10)(x - 15)
B) (x + 5)2
C) (x + 5)(x + 5)
D) (x - 5)2
  • 5. Þáttaðu x2 + 2x - 35
A) (x - 3)2
B) (x + 7)(x + 5)
C) (x - 5)(x + 7)
D) (x + 5)(x - 7)
  • 6. Þáttaðu x2 + 2x - 8
A) (x + 2)(x - 4)
B) (x + 1)(x- 4)
C) (x - 2)(x - 2)
D) (x + 4)(x - 2)
  • 7. Þáttaðu x2 - x - 56
A) (x + 8)(x - 7)
B) (x + 4)(x - 2)
C) (x + 7)(x - 8)
D) (x + 5)(x - 7)
  • 8. Þáttaðu x2 - 13x - 30
A) (x + 8)(x - 5)
B) (x + 2)(x - 15)
C) (x + 5)(x - 8)
D) (x + 15)(x - 2)
  • 9. Þáttaðu x2 + 8x + 15
A) (x - 5)(x - 3)
B) (x + 5)(x + 3)
C) (x + 1)(x - 15)
D) (x + 4)(x - 3)
  • 10. Þáttaðu x2 -11x + 24
A) (x - 4)(x - 6)
B) (x - 8)(x - 3)
C) (x + 3)(x + 8)
D) (x - 6)(x - 4)
  • 11. Þáttaðu x2 + 4x + 4
A) (x + 4)(x - 2)
B) (x + 2)(x + 2)
C) (x - 2)(x - 2)
D) (x - 4)(x - 2)
  • 12. Þáttaðu x2 - 20x + 100
A) (x + 25)(x + 4)
B) (x - 10)(x - 10)
C) (x - 25)(x - 4)
D) (x + 10)(x + 10)
  • 13. Þáttaðu x2 + 2x - 48
A) (x - 6)(x + 8)
B) (x + 6)(x - 8)
C) (x + 4)(x - 2)
D) (x - 24)(x - 2)
  • 14. Þáttaðu x2 - 7x + 12
A) (x + 4)(x - 3)
B) (x + 3)(x + 4)
C) (x - 3)(x - 4)
D) (x + 3)(x - 4)
  • 15. Þáttaðu x2 - 9
A) (x - 3)(x - 3)
B) (x - 9)(x - 1)
C) (x + 3)(x + 3)
D) (x + 3)(x - 3)
  • 16. Þáttðu x2 - 10x + 9
A) (x + 3)(x - 3)
B) (x + 9)(x - 1)
C) (x + 9)(x + 1)
D) (x - 9)(x - 1)
  • 17. Þáttaðu x2 - 8x + 16
A) (x + 4)(x + 4)
B) (x + 16)(x - 1)
C) (x - 4)(x + 4)
D) (x - 4)(x - 4)
  • 18. Þáttaðu x2 - 2x + 1
A) (x - 1)2
B) (x - 2)2
C) (x + 2)2
D) (x + 1)2
  • 19. Þáttaðu x2 + 3x - 28
A) (x - 4)(x - 4)
B) (x - 4)(x + 7)
C) (x - 7)(x - 4)
D) (x + 4)(x + 7)
  • 20. Þáttaðu x2 - 121
A) (x - 11)2
B) (x + 11)(x + 11)
C) (x - 11)(x + 11)
D) (x - 11)(x - 11)
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