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a fost răspuns

Precizati valoarea de adevar a propozitiilor : 8€Z ; 8€Q ; 8€R ; -6€Z ; -6€N ; -7/3€Q ; -8,3€R , -3,9€Z ; -4(5)€ Q
; (radical din 8)€Q ; (radical din 8)€R-Q ; (radical din 25)-(-3)(-8)€N ; [-(-3)+(-2)](totul la purerea a 3 ) €Z
***(€=apartine )
*** Dau coroana

Răspuns :

1 adevarat 2 adevarat 3 adevarat 4 adevarat 5 fals 6 adevarat 7 adevarat 8 fals 9 adevarat 10 fals 11 flas 12 adevarat 13 adevarat
8€Z (A)
8€Q (A)
8€R (A)
-6€Z (A)
-6€N (F)
-7/3€Q (A)
-8,3€R (A)
-3,9€Z (F)
-4,(5)€ Q (A)
√8€Q (F)
√8=2√2

√8€R-Q (A)

[√25-(-3)(-8)]€N (F)
√25-(-3)(-8)=5-24=-19
-19 nu apartine lui |N

[-(-3)+(-2)]³€Z (A)
[-(-3)+(-2)]³=(3+2)³=1³=1 €Z

|N inclus in Z inclus in Q inclus in R