8^x=2^3.x
512=2^9
512^4=2^36
=> 3.x<36
x<9
x=(0,1,2,3,4,5,6,7,8)
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
hay viet cac tap hop sau bang cach khac
A={ 9;11;13;...;99]
B={ 12 ; 24 ; 36 ;48}
M= { THANG 4 ; THANG 6 ;THANG 9 ; THANG 11}
N = { X THUOC N / X LON HON HOAC BANG 3 , LON HON HOAC BANG 10}
Q = { X THUOC N / X LON HON 0 ,BE HON 10}
tìm x thuoc Z biet
2 < = |2x - 3 | < 4 ( < = la lon hon hoac bang)
cac ban lam nhanh ho minh voi minh can gap 4 gio phai nop roi ai nhanh dung minhf tick cho
Tim chu so tan cung cua A=2^0+2^2+2^4+2^6+...+2^2014+2^2016
Tim so tu nhien n biet 82 chia n du 7 va 144 chia n du 9
MINH DANG CAN GAP CAC BAN GIAI NHANH GIUM CHO MAI MINH PHAI NOP ROI
a)
tinh (-10)+12+(-14)+16+(-18)+20+(-24)+26+(-2015)+2017
b) tinh
455+(-311)+3789+(-144)
c) tim tong cac so nguyen x biet
a) -4 <x be hon hoac bang 4
b) -7 < hoac bang x < hoac bang 8
c) -9 < x < hoac bang 5
1. tim xa) x+4 chia het x+1 b) x-7 chia het x-3 c) (4x+3) chia het x+2 d) 4x-5 chia het x2. tim x,ya) (x-3).(2y+1)7b) (2x+1).(3y-2)-553. tim xa) (x+1)+(x+3)+(x+5)+...+(x+99)0b) (x-3)+(x-2)+(x-1)+...+10+1111 CAC BAN GIUP MINH CLIK CHO, CAM ON CAC BAN RAT NHIEU !!! CHIEU MIK PHAI NOP ROI
Đọc tiếp
1. tim x
a) x+4 chia het x+1 b) x-7 chia het x-3 c) (4x+3) chia het x+2 d) 4x-5 chia het x
2. tim x,y
a) (x-3).(2y+1)=7
b) (2x+1).(3y-2)=-55
3. tim x
a) (x+1)+(x+3)+(x+5)+...+(x+99)=0
b) (x-3)+(x-2)+(x-1)+...+10+11=11
CAC BAN GIUP MINH CLIK CHO, CAM ON CAC BAN RAT NHIEU !!! CHIEU MIK PHAI NOP ROI
tim cac so tu nhien x sao cho:
A. x thuoc B (12) va 20 được hon hoac nổ x là hon hoac nổ 50
B.x chia het cho 15 va 0<x be hon hoac bang 40
Cx thuoc U (20) va x> 8
D. 16 chia het cho x
tim ( a;n) E N biet a khac 0 , a < 10
va aaa= 1+2+3+.............+n
cac ban nho giai gium minh nha , viet ca cach giai nua nhe , cam on nhieu
Tim x € n thoa manA)6 chia het cho (x-1)B)14 chia het cho (2×X+3)C)X+1 la uoc (15D)X chia het cho 13 va 10 be hon hoac bang X be hon hoac bang 70E)X € B(15)va 20 be hon hoac bang X be hon hoac bang 80F ) X € uoc (42); X lon hon 5G)35 chia het cho X va X be hon 10Mik kO biet viet ki hieu 😀😀😀 thong cam nhaAi dug thi thong minh 🎓🎓🎓mik se kban va tick 🐇🐇
Đọc tiếp
Tim x € n thoa man
A)6 chia het cho (x-1)
B)14 chia het cho (2×X+3)
C)X+1 la uoc (15
D)X chia het cho 13 va 10 be hon hoac bang X be hon hoac bang 70
E)X € B(15)va 20 be hon hoac bang X be hon hoac bang 80
F ) X € uoc (42); X lon hon 5
G)35 chia het cho X va X be hon 10
Mik kO biet viet ki hieu 😀😀😀 thong cam nha
Ai dug thi thong minh 🎓🎓🎓
mik se kban va tick 🐇🐇
Chung to A = 1 x 2 + 2 x 3 + 3 x 4 + ..... + n x [ n + 1 ] = {[n x [ n + 1 ] x [ n + 2 ] }/3 , n > 0
Cac ban nhanh len nhe ngay mai minh phai nop roi . Ai lam nhanh , dung dau tien minh cho 1 tich