Formule de calcul prescurtat
  • 1. (x+3)2
A) x2+6x+9
B) x2+6
C) x2+9
D) x2+6x+6
  • 2. (x+4)2
A) x2+16
B) x2+8x+16
C) x2+8
D) x2+8x+8
  • 3. (x-3)2
A) x2-6x-9
B) x2-9
C) x2-6x+9
D) x2-6x+6
  • 4. (x-4)2
A) x2+16
B) x2-8x+16
C) x2-8x-16
D) x2-8x+8
  • 5. (x+2)(x-2)
A) x2+4x-4
B) x2+4
C) x2-4
D) x2-4x-4
  • 6. (x+5)(x-5)
A) x2-25
B) x2+10x-25
C) x2+25
D) x2+10x+25
  • 7. (2x+1)(2x-1)
A) 2x2-1
B) 4x2+1
C) 4x2+4x-1
D) 4x2-1
  • 8. (3x+2)(3x-2)
A) 3x2-4
B) 9x2+12x+4
C) 9x2+4
D) 9x2-4
  • 9. (3x+1)2
A) 3x2+1
B) 9x2+1
C) 9x2+6x+1
D) 3x2+6x+1
  • 10. (2x-1)2
A) 4x2+1
B) 4x2-4x+1
C) 4x2+4x+1
D) 4x2-1
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