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Factor comun
Contributed by: Romeo
  • 1. 3·5+3·7=?
A) 7·(5+3)
B) 3·(5+3)
C) 5·(3+7)
D) 3·(5+7)
  • 2. 2·x+2·4=?
A) 2·(x+6)
B) 2·(x+2)
C) 2·(x+4)
D) 2·(x+8)
  • 3. 3·x+6=?
A) 3·(x+2)
B) 3·(x+6)
C) 2·(x+2)
D) 3·(x+3)
  • 4. 9·x - 9·1=?
A) 9·(x-9)
B) 9·(x-0)
C) 9·(x-1)
D) 9·(x-3)
  • 5. 5·x+5=?
A) 5·(x+1)
B) 5·(x+0)
C) 5·(x+2)
D) 5·(x+5)
  • 6. 15x - 25
A) 15(x-10)
B) 5(3x-5)
C) x(15-25)
D) 3(5x-8)
  • 7. 14x + 20
A) 14(x+20)
B) 7(2x+3)
C) 2(7x-10)
D) 2(7x+10)
  • 8. 12x - 24
A) 4(3x-6)
B) 6(2x-4)
C) 12(x-2)
D) 2(6x-12)
  • 9. z·x+z·y=?
A) x·(y+z)
B) z·(y+2)
C) y·(x+z)
D) z·(x+y)
  • 10. Dacă x+y=10, atunci 3·x+3·y=?
A) 90
B) 60
C) 30
D) 20
  • 11. Dacă 2·x+2·y=50, atunci x+y=?
A) 75
B) 10
C) 100
D) 25
  • 12. Dacă x+y=6 și z=5 atunci z·x+z·y=?
A) 60
B) 15
C) 14
D) 30
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