Question

Calculati :
a)|12|
b)|-10|
c)|3,2|
d)
|-0,4|
e)|radical5|
f)|-2radical2|
g|radical3-1|
h)|-3supra7
2.incadrati fiecare dintre numerele urma intre doua numere intregi consecutive:
a)...<radical5<
b)...<-7,3<...
c)...<0,2<....
e)...<2radical2<...
comparati nr :
a.0.(2)...0,(21)
b.radical5...2radical6
c.radical3...1,73
    P.S.   cine are caiet de vacanta la matematica clubul matematicienilor?

Answer 1

a)|12|=12
b)|-10|=10
c)|3,2|=3,2
d)|-0,4|=0,4
e)|radical5|=$\sqrt{5}$
f)|-2radical2|=$2\sqrt{2}$
g|radical3-1|=$\sqrt{3}-1$
h)|-3supra7|=$\sqrt{3} +7$

trebuie ca numerele sa apartina Z
a)...2<radical5<3
b)....-8<-7,3<-6...
c)...-1<0,2<0....
e)...7<2radical2<9... il ridicam la patrat si avem $2\sqrt{2}$²=4*2=8


a.0.(2)..>.0,(21)     0,(2)=0,222..    ;  0,(21)=0,2121 

b.radical5  <...2radical6 le ridicam pe ambele la patrat $\sqrt{5}$²=5 si $2 \sqrt{6}$²=4*6=24


c.radical3... >1,73 $\sqrt{3}$= 1,732