
DIGITALIADA VIII. Reguli de calcul in R
Authored by Szász Szilárd
Mathematics
8th Grade
Used 31+ times

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13 questions
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1.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Alege din următoarele propoziții cele false:
Suma dintre două numere raționale este un număr rațional.
Produsul a două numere iraționale este întotdeauna un număr irațional.
Elementul neutru al operației de înmulțire este 0.
Pentru orice număr real nenul există un element invers.
A raționaliza o fracție înseamnă a elimina, prin amplificare radicalii de la numitor.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
După raționalizare:
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
După raționalizare:
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Media aritmetică a numerelor
√18 și √50 este ...
4√2
8√2
√34
√68
2√5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Media geometrcă a numerelor
2√3 și 8√27 este ...
36
5√15
12
√12
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
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