§. Natural va butun sonlar

Ifodaning qiymatini modul belgisisiz yozing.

A) B) C) D)

6. ifodanisoddalashtiring. ( xϵ(– ∞; 1) )

A) x² +x+1 B) – (x²+x+1) C)x² +x D)x²– x+1

40. ifodanisoddalashtiring.

( xϵ(1; 3) )

A) x² +x+1 B) –(x² +x+1) C)x² +x D)x²– x+1

41. ifodanisoddalashtiring.( xϵ(3; ∞) )

A) x² +x+1B) – (x² +x+1) C)x² +x D)x²– x+1

42. ifodanisoddalashtiring. ( aϵ(– ∞; – 2) )

A)– a/2 B) (a – 1)/2 C) a(a – 1)/2 D) a(a + 1)/2

43. ifodanisoddalashtiring.( aϵ(– 2; ∞) )

A) – a/2 B) (a – 1)/2C) a(a – 1)/2 D) a(a + 1)/2

44. ifodanisoddalashtiring. ( mϵ(– ∞; – 2) )

A) 1/(m + 2) B) – 1/(m + 2) C) 1/(m – 2) D)– 1/(m – 2)

45. ifodanisoddalashtiring. ( mϵ(– 2; 0) )

A)1/(m + 2) B) – 1/(m + 2) C) 1/(m – 2) D) – 1/(m – 2)

46. ifodanisoddalashtiring. ( mϵ(3; ∞) )

A) 1/(m + 2) B) – 1/(m + 2) C) 1/(m – 2) D) – 1/(m – 2)

47. ifodanisoddalashtiring. ( mϵ(0; 3) )

A) 1/(m + 2) B) – 1/(m + 2) C) 1/(m – 2) D) – 1/(m – 2)

48. ifodanisoddalashtiring. ( xϵ(– ∞; – 1) )