Am nevoie urgent pt mâine!!Am nevoie de ajutor la toate ex..
Răspunsuri la întrebare
Răspuns:
1) a) 125-16=109
b) 123 la 0 -1 la 2012 =0
123 la 0 = 1
1 la 2012 = 1
1-1 = 0
c) 5²×2² = 100
5² = 5•5 = 25
2² = 2•2 = 4
25×4 = 100
d) (2+9)² = 121
2+9 = 11
11² = 11•11 = 121
2)26^89>26^88
15^768>14^768
9^32>8^31
(4^3)^9 >4^21
4^27 > 4^21
3)a. 3 la puterea 3+23 la puterea 1×3 la puterea 3 + 1220 la puterea 0=3 la puterea 3 +23 × 3 la puterea 3 +1220 la puterea 0=3 la puterea 3 +23 ×3 la puterea 3 +1=24×3 la puterea 3 +1=24×27+1=648+1=649
b.81×49+22×10 la puterea 3 - 154=
3969+22×10 la puterea 3 - 154=
3815+22×10 la puterea 3 =
3815+22×1000=
3815+22000=25815
c.13-21-2×2=
13-21-4=-12
d. 12x[110-10x(9x8-9x7)]
= 12x[110-10x(72-63)]=
=12x(110-10x9)=
=12x(110-90)=
=12x20=
=240
4) (5 la puterea 2+5+1)×5 la puterea 60=
(25+5+1)×5 la puterea 60=
31×5 la puterea 60
5)57:2=28 rest 1
28:2=14 rest 0
14:2=7 rest 0
7:2=3 rest 1
3:2=1 rest 1
1:2=0 rest 1
57=111001(în baza 2)
Sper ca te am ajutat!