Ultimele 3 ex va rog!!!
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Răspuns:
Explicație pas cu pas:
4.
A = {-2, -1, 0, 1, 2}
5.
0,(1) = 1/9
√1/9 = 1/3
15/4 : 5/8 + 7/3 : 1/3 - 18 : 9
= 15/4*8/5 + 7/3*3 - 2
= 6 + 7 - 2 = 11
6.
√1000 < x
1000 < x^2
33*33 = 1089
32*32 = 1024
31*31 = 961
x = 32