A=22 + 24 + 26 +...+ 230
2A=24 + 26 + 28+...+231
2A-A=(24 + 26 + 28+...+231)-(22 + 24 + 26 +...+ 230)
A=231-22
Tick nha
A=22 + 24 + 26 +...+ 230
2A=24 + 26 + 28+...+231
2A-A=(24 + 26 + 28+...+231)-(22 + 24 + 26 +...+ 230)
A=231-22
Tick nha
\(B=1\cdot1^2\cdot1^3\cdot..\cdot1^{2017}\)
tinh rut gon
tinh rut gon
\(2003^{2^{0^{1^0}}}\)
\(625^5:25^7\)
giup minh
tinh rut gon
\(625^5:25^7\)
bài 2 viết mỗi tích, thương sau dưới dạng luỹ thừa
a) 4^10 x 2^30 b) 9^25 x 27^4 x 81^3 c) 25^50 x 125^5 d) 64^3 x 4^8 x 16^4
e)3^8:3^6 ; 2^10:8^3 ; 12^7 :6^7 ; 31^5 ; 81^3
f) 5^8 : 25^2 ; 4^9:64^2 ; 2^25 : 32^4 ; 125^3 : 25^4
nho cac ban giup minh nhe
1.tim x thuoc N biet:
a)(2x+1)mu 3=125 b)(x-5)mu 4=(x-5)mu 6 c)2 mu x-15=17 d)(7x-11)mu 3=2 mu 5. 5mu 2+200
2.viet cac tich sau hoac thuong duoi dang luy thua cua mot so:
a)2 mu 5 . 8 mu 4 b)25.125 c)25 mu 5:25 mu 7
3.viet cac tich, thuong sau duoi dang luy thua:
a) 2 mu 10:8 mu 3 b)12 mu 7:6 mu 7 c)5 mu 8:25 mu 2
4.tinh gia tri cac bieu thuc sau:
a mu3 . a mu 9 (a mu 5)mu7 (a mu 6)mu 4. a mu 12 4.5 mu 2-2.3 mu 2
So Sánh 2 số sau
A = 230 + 330 + 4
B = 3 *2410
tìm x thuộc N biết
a, \(2^6-2x+3.5^x=2^2.3^2+2^4\)
b, \(2.5^{x+1}+3.5^x=2^2.3+1\)
c, \(3^2+2^4-\left(6^8:6^6-6^2\right)< 5^x< 125\)
Bài 6*: So sánh hai số.
a) A=10^30 & B=2^100
b) A=3^450 & B=5^300
tinh thu gon
\(\dfrac{4^{19}+8^7}{2564+323}\)