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Descompunerea in factori1
  • 1. 2x2+4x=
A) 2(x2+2x)
B) 2x(x+2)
C) x(x+2)
D) 2x(x+4)
  • 2. x2+5x=
A) x(x+5)
B) x(1+5)
C) x2(x+5)
D) x2(5)
  • 3. x2+x=
A) x(x+x)
B) x(x+1)
C) x2(x+1)
D) 1(x2+x)
  • 4. -4x2-8x=
A) -2x(2x+4)
B) -4x(x+2)
C) -4(x+2)
D) -4x(x-2)
  • 5. 2x+10=
A) 2x(x+5)
B) 2(x-5)
C) 2(x+5)
D) 2(x+10)
  • 6. x(x+5)+2(x+5)=
A) x(x+5)
B) 2x(x+5)
C) (x+5)(x+5)
D) (x+5)(x+2)
  • 7. x(x+2)+(x+2)(x+1)=
A) (x+2)(2x+1)
B) (x+2)(x+1)
C) x(x+2)
D) x(x+2)(x+1)
  • 8. (x+1)2-(x+1)(x+4)=
A) (x+1)(2x+5)
B) -3(x+1)
C) (x+1)(x+4)
D) 5(x+1)
  • 9. (x-2)2+(x+4)(x-2)=
A) (x-2)(x+1)
B) (x-2)(x+4)
C) 2(x-2)(x+1)
D) (x-2)(2x+2)
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