\(\left(-3\right)^2+\left(-2\right)^3=9+\left(-8\right)=1\)
(-3)2+(-2)3 = 9+8 = 17
k dc chua
1+2+3+4+...+2014=
ai nhanh minh tick
bai na de ko biet thi hoi minh
(2^11+2^10+2^9+...+2^3+2^2+2+1):(2^8+2^4+1)
(nho trinh bay chi tiet do, ai nhanh nhat va giai chi tiet de hieu thi to tick cho)
so chinh phuong lon nhat co 3 chu so la:........?
(ai tra loi dung nhanh nhat minh tick cho 2 cai lun)
bai 1:tim n thuoc n de:3(n+2) chia het cho n-2
bai 2chng minh rang cac so sau la cac so nguyen to cung nhau
a) 18n+3 va 21n+4
b)2n+1va3n+1
bai 3:tim hai so biet tong hai so la 90 va uoc chung lon nhat la 15
bai 4:tim so tu nhien n lon nhat co 3 chu so sao cho n :15 du 9va n:35 du 29
bai 5:tim uoc chung lon nhat cua cac so sau:
a)18n+3 va 21n+4
b)9n+13 va 3n+4
bai 6:chung minh: voi moi a,b thuoc nta co
UCLN(a,b)=UCLN (5a+2b,7a+3b)
AI DUNG TRUOC 9H MINH SE TICH CHO.THANHK YOU VERY MUCH!
Bai1: Tim hai so tu nhien a va b biet a+b=128 va UCLN(a,b)=16
Bai2: chung to 2n+1 va 2n+3 la 2 so nguyen to cung nhau
Bai 3: Chung minh:
A=2+22+23+......+22010 chia het cho 3 va chia het cho 7
ai nhanh mik tick cho ( TOP 12 nguoi nhanh nhat ) nhanh nhanh nha t2 mik nop rui
^-^
1+2-1-3=?
ai lam nhanh nhat mk tick
Giup minh voi!
CMR: 1/2^2 + 1/4^2 + 1/6^2 + ....+ 1/2010^2 < 1/2
Ai nhanh nhat va dung nhat minh tick cho !
Giup minh voi!
Tim x:
a) 1/5.8 + 1/8.11 + 1/11.14 +........+ 1/x(x+3) = 101/1540
b) 1 + 1/3 + 1/6+ 1/10+......+ 1/x(x+1):2 = hon so 1 1991/1993
Ai nhanh nhat dung nhat tick lun!(Nho ghi cach giai ro rang)
Tim so tu nhien n de :
a . n - 1 \(⋮\) n + 2
ai nhanh nhat va dung nhat mik se tk
