Cac ban giai giup minh bai nay voi
a 1+(-3)+2+(-4)+3+(-5)+...+98+(-100)
b 1+(-5)+2+(-6)+3+(-7)+...+99+(-103)
2^3+3^3+4^3+...+20^3=? Giup minh giai bai nay nhe giai thich cach lam nhe cac ban
chung to :1/3+2/3^3+3/3^3+4/3^4+...+100/3^100<3/4
mong cac ban giup do lam ho minh bai nay
Bai 1. 12 chia het ( x + 3 )
bai 2. Tim so tu nhien x, biet 6x + 4 chia het cho 2x
cac ban nho giai chi tiet giup minh nha cam on
minh moi lap dc nik nay xin cac ban giai giup minh bai nay voi
Tinh nhanh : 66 x 25 + 5 x 66 + 66 x 14 + 33 x 66
hoi cac ban ne, minh dang voi nen giai nhanh giup minh nha :)
(x-2)2x(y-3)=-4
cho a =1/2^2 +1/2^3 +1/2^4+.....+1/2^100 c/m A khong phai la so tu nhien
CAC BAN GIUP MINH GIAI NHE! AI GIAI DUNG MINH TICH CHO
Chung minh rang :
1/2-1/4+1/8-1/16+1/32-1/64 nho hon 1/3
Ban nao nhanh tay se nhan duoc LIKE!
bai 1:tim x
a,48:(7x-15)=8
b,100-3(5-x)=73
c,[(x+32)-17]*2+8=50
giup minh voi !!!!