Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a,\left(-7\right)^6\)
\(b,\left(-4\right)^3.\left(-5\right)^3=\left[\left(-4\right).\left(-5\right)\right]^3=20^3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a. \(5^{23}.5^3.5=5^{23+3+1}=5^{27}\)
\(3^5:9^2.9=3^5:\left(3^2\right)^2.3^2=3^5:3^4.3^2=3^{5-4+2}=3^3\)
b. A = {2; 3; 5; 7}
Bạn linh làm trước mà ko l ke lại l ike bạn kia, bất công bạn linh!
![](https://rs.olm.vn/images/avt/0.png?1311)
1.
a) \(3^4\times3^5\times3^6=3^{4+5+6}=3^{15}\)
b) \(5^2\times5^4\times5^5\times25=5^2\times5^4\times5^5\times5^2=5^{2+4+5+2}=5^{13}\)
c) \(10^8\div10^3=10^{8-3}=10^5\)
d) \(a^7\div a^2=a^{7-2}=a^5\)
2.
\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)
\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)
\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A=2 . 4 . 8 . 16 . 156
=2. 2^2 . 2^3 . 2^4 . 2^7
=2^17
B=5 . 25 .125 . 625 . 5^7
=5 . 5^2 . 5^3 . 5^4 . 5^7
=5^17
tích cho mk nha
\(5^5=3125\)
\(9^5=59049\)
\(7^4=2401\)
2,5,4,5,2,8