\(C=1+3+3^2+3^3+...+3^{11}\)
\(\Rightarrow C=3^0+3^1+3^2+3^3+...+3^{11}\)
\(\Rightarrow3C=3^1+3^2+3^3+3^4+...+3^{12}\)
\(\Rightarrow3C-C=\left(3^1+3^2+3^3+3^4+...+3^{12}\right)-\left(3^0+3^1+3^2+3^3+...+3^{11}\right)\)
\(\Rightarrow2C=3^{12}-3^0\)
\(\Rightarrow C=\frac{3^{12}-1}{2}\)
F = 1 + 3 mu 1 + 3mu 2 + 3 mu 3 + ... + 3 mu 100
Mong cac ban lam giup mimh
tim x nguyen biet:
a 8.(x mu 2 +3).(5-x)
b)(2x + 1)mu 2=25
c) (1-3x)mu3 =64
d)(4-x)mu3 =-27
e) xmu2 -5x =0
cho s =1+3 mu n1+ 3 mu2+ 3mu 3+3 mu 4+......3 mu 30
tìm chữ số tận cùng
708-3:(x+3 mu 1)=407
2.x+15=134:2
114-2.(2x+11)=80
12.x-33=3 mu 2. 3 mu3
200-8.(2.x+7)=112
2 mu 4:(x+1)+2=6
2448-(5.x+148)=2. 10 mu 3
125:x+100=125
2.x-138=8.9
145-x=98+32
Giup em giai nhung bài nay ho a
bai1
5mu3+3mu5
bai2
(x-1)mu3=125
720/(41-(2*x-5))=2mu 3*5
bai3
1 phan 9 * 3 mu 4 * 3 mu n =3 mu 7
(2 mu 2 chia 4)* 2 mu n = 4
bai4
2 * 2mu2 * 2mu3 * 2mu4 *.......*2 mu100
3mu 2/ (0,375) mu 2 + (0,25) mu 4 . 1024 . ( -1) mu 11
ai đúng và nhanh mình tick cho
giúp mk nha
tim so tu nhien x de cac so sau la so nguyen to
a ,2 .x
b , 7 .x
c , 3 . [ x-6]
d,5-x
e,7-x
g,11-x
f, 11 .[x-15]
h,2 mu3 .b +3 mu 2 .b
giải nhanh hộ tớ tớ cần gấp
9[3mu x[ 243
25[5mu x [ 625
9[3 mu n [27
25 [ 5mu h [ 3152
2 mu n + 4.2 mu n =5.2 mũ 5
2 mu n /4=16
6.2 mu n+3.2 mu n =9.2 mu n
3 mu n / 3 mu 2 = 243
1.Tính
a)112 .53 -53.13+53
b)64+62.19
c)2 mũ 2-3-(1 mũ 20+8):3 mũ 2
d)7 mu 2-36 :3mu 2
Mk đang cần gấp
Kảm ơn trước nha!
