tìm số dư khi chia

B= 2+2^3+2^5+2^7+2^9+2^11+...+2^2015+2^2017 cho 21

ai giai duoc cho 3 like\

giai thich ro nhe

tìm số dư khi chia

B= 2+2^3+2^5+2^7+2^9+2^11+...+2^2015+2^2017 cho 21

ai giai duoc cho 3 like\

giai thich ro nhe

Chung to rang : (9^m+9)(9^m+2)(9^m+3)(9^m+4) chia het cho 5 voi moi m thuoc N

Ai tra loi cau hoi nay toi co 10 nick GIUP TOI GIAI TOAN se vao tung nick de an like cho nguoi --do

- Ai tra loi truoc duoc 3 like

-xong nhi duoc 2 like

-Ai tra loi chinh xac duoc 5 like

GIAI THICH luon nhe cac ban

-nhung nguoi con lai toi cho 1like

a+x =5     a-x =2   neu duoc giai thich cach lam luon cho minh nhe

Thuc hien cac phep tinh

A,5⁶:5⁴+2³×2²-1²⁰¹⁷

^{ghi cach lam , loi giai ra nhe,trinh bay ro ra nhe!! Thank pho watching}

M=(5^9+5^8+5^7).(3^6+3^5+3^4+3^3+3^2+3) chung minh chia het cho 2015

giup minh giai ra nhe cam on

tìm số dư khi chia B= 2+2^3+2^5+2^7+2^9+2^11+...+2^2015+2^2017 cho 21

so sanh

a, 3^300 va 2^300

b, 125^5 va 25^7

c, 9^20 va 27^13

d, 3^54 va 2^81

e, 10^3 va 2^100

g, 5^40 va 620^10

tim cach giai thich nhe

so sanh

a, 3^300 va 2^300

b, 125^5 va 25^7

c, 9^20 va 27^13

d, 3^54 va 2^81

e, 10^3 va 2^100

g, 5^40 va 620^10

tim cach giai thich nhe