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exercitiul 1,2si3 repede vaa rog dau coooroooana


Exercitiul 12si3 Repede Vaa Rog Dau Coooroooana class=

Răspuns :

1.
(25+90):5-20+3=115:5-17=23-17=6 =>raspuns b)
2.
A=5²=25
B=4+6=10
C=7·2=14
A->d ; B->b ; C->a
3.
a)10+36-35-11=0
b)2017-{[42-(25·14-85·4)·2]·3+64}=
2017-{[42-(350-340)·2]·3+64}=
2017-[(42-20)·3+64]=
2017-(66+64)=
2017-130=
1887
c)(100-49+625)·(1+1)=676

Ex1 b
Ex2 A-d
B-b. C-a
Ex 3
a=0
b=2
c=676