Tính: \(\frac{49^{24}.125^{10}.2^8-5^{30}.7^{49}.4^5}{5^{29}.16^2.7^{48}}\) GIUP MINH VOI !!!........ Cam On Cac Ban Nhieu
bai 1, tim x, biet
a, (-x+31)-39=-69 b, -120-(-30-x)=-50 c, /x/ -5=-1 d, /x+2/-12=-1
e, \(\left(3x-2^4\right).7^3=2.7^5\)
giup minh voi minh can gap, cam on cac ban nhieu
Q= 1/2! + 2/3! + 3/4! +...+ n-1/n!
Chung minh rang Q<1
Cac ban oi giup minh voi. Thanks!
cac ban oi lam sao de kiem tra ly ngay tren may tinh cho ho cham diem ;minh phai vao trang nao day
[GIUP TO VOI NGAY MAI TO THI ROI TO MUON LUYEN DE MONG CAC BAN GIUP]
giup minh voi cac ban :
1timx
5^x-2-3^2=2^4-(2^8.2^4-2^10.2^2)
697:[(15^x+364):x]=17
134:(x-3)=35+160:5
(3.x-2^4).7^3=2.7^4
[(10-x) .2+5]:3-2=3
2 tim x thuoc N
cau a : n+5chia het n +1
cau b :2.n +7 chia het cho n-2
(3x+1)chia het (2x-1)
giup minh voi cac ban oi toi minh phai di hoc
giup minh voi cac ban than yeu oi
4n +1 chia het cho n - 3
cac ban oi giup minh voi mai minh phai nop rou
tìm các số nguyên n sao cho n+1 chia het cho 3n-2
Aloalo giup minh voi cac ban oi!
Tinh gia tri bieu thuc sau ;A=1^2+2^2+3^2+....+n^2 (nEN).