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exercitiul 2 va rog multtttttttt


Exercitiul 2 Va Rog Multtttttttt class=

Răspuns :

E(x)= radical(x+2)² + radical(x-5)²

a) [E(5)-5]:2=

( radical 7² +radical 0² -5):2=

( 7+0-5):2=

2:2=1

b) E(a)= |a+2|+|x-5|

a€[-2,5]

E(a)=a+2-a+5

E(a)=7 €N oricare ar fi a€[-2,5]