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19 tháng 3 2017

2*1017

19 tháng 3 2017

2x10^16

tk mình nha kb

29 tháng 12 2022

789. 2- 56+ (-95)+111+261+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

= 1578- 56+ (-95)+111+261+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1522+ (-95)+111+261+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1427+111+261+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1538+261+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1799+498-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2297-215+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2082+49+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2131+1236-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=3367-4591-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=-1224-56+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=-1280+4189+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2909+48+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2957+52-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=3009-1000-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=2009-500+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1509+230+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=1739+32500-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=34239-5600+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=28639+2641+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=31280+853+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=32133+195-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=32328-564+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=31764+235+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=31999+4187+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=36186+9023177-5000000+562+159-90+459-420+562+235+489+71+12

=9059363-5000000+562+159-90+459-420+562+235+489+71+12

=4059363+562+159-90+459-420+562+235+489+71+12

=4059925+159-90+459-420+562+235+489+71+12

=4060084-90+459-420+562+235+489+71+12

=4059994+459-420+562+235+489+71+12 

=4060453-420+562+235+489+71+12 

=4060033+562+235+489+71+12 

=4060595+235+489+71+12

=4060830+489+71+12

=4061319+71+12=4061402

29 tháng 12 2022

ủa:q. rảnh v:))

15 tháng 10 2017

3 tháng 12 2023

lammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

 

23 tháng 9 2018

15-6526

=-6511

15-245

=-230

20 tháng 12 2022

1.\(=56+47-56+53-40\)
\(=\left(56-56\right)+\left(47+53\right)-40\)
\(=0+100-40=60\)
2.\(34+59-34+41+100\)
\(=\left(34-34\right)+\left(59+41\right)+100\)
\(=0+100+100=200\)
3.\(=109+34-109+66-10\)
\(=\left(109-109\right)+\left(34+66\right)-10\)
\(=0+100-10=90\)

2 tháng 4 2017

0 nha bn

2 tháng 4 2017

là 0 nha bn

~~ tk mk đi ~~

Ai tk mk mk tk lại ~~ ^^

Kb vs mk nha m.n ~~ n_n

16 tháng 7 2017

125+645=770

56+45=101

5565-421=5144

562-65=497

5233+456=5689

16 tháng 7 2017

= 770

= 101 

= 5144

= 497

= 5689

TK CHO MK NHA CÁC BẠN MK ĐG BỊ ÂM ĐIỂM

13 tháng 12 2019

\(Ta có : 1 + 2 + 3 + ... + 100+ 50 + 53\)\( + ... + 197\)

\(= ( 1 + 2 + 3 + ... + 100 ) + ( 50 + 53 + ...\)\(+ 197)\)

\(=[(100+1)÷1+1].[(100+1)÷2]+ \)\([ ( 197 - 50) ÷3+ 1 ] . [ ( 197+ 1)÷2]\)

\(=5050 + 6175\)

\(= 11225\)

13 tháng 12 2019

Cs bn lm đúng òi đs 

19 tháng 12 2015

a)A=2+2^2+2^3+...+2^60 chia hết cho 15

=>(2+2^2+2^3+2^4)+...+(2^57+2^58+2^59+2^60)

=>2.(1+2+2^2+2^3)+...+2^57+(1+2+2^2+2^3)

=>2.15+...+2^57.15

Vì 15 chia hết choo 15

=>a chia hết cho 15

b)B=1+5+5^2+5^3+...+5^56+5^59+5^98 chia hết cho 31

=>(1+5+5^2)+...+5^56.(1+5+5^2)

=>31+....+5^56.3vi2 31 chia hết cho 31

=>B chia hết cho 31

 

19 tháng 12 2015

Ta có : 
=2+2^2+2^3+...+2^60 = 2(1+2+2^2+2^3) + 2^5(1+2+2^2+2^3) + ... + 2^57(1+2+2^2+2^3) 
A=(2+2^5+...+2^57)*15 chia het cho 15