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![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(7^{15}\)
b)\(162^8\). 2
c)\(10^8\)
d) \(a^0\)
Xin lỗi nha mk hơi vội nên có sai thì bạn châm trc cho mk nha.
![](https://rs.olm.vn/images/avt/0.png?1311)
= \(3^8:3^4=\left(3^{8-4}\right)=3^4\)
= \(10^8:10^2=\left(10^{8-2}\right)=10^6\)
\(a^6:a=a^6:a^1=\left(a^{6-1}\right)=a^5\)
![](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)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(3^8:3^4=3^{8-4}=3^4\)
b) \(10^8:10^2=10^{8-2}=10^6\)
c) \(a^6:a=a^{6-1}=a^5\)
Áp dụng quy tắc am : an = am - n(a ≠ 0, m ≥ n ).
a) 38 : 34 = 38 – 4 = 34 = 81;
b) 108 : 102 = 108 – 2 = 106 = 1000000
c) a6 : a = a6 – 1 = a5
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 3^8 : 3^4 = 3^8-4 = 3^4
b) 10^8 : 10^2 = 10^8-2 = 10^6
c) a^6 : a = a^6-1 = a^5
a)3^8-4=3^4
b)10^8-2=8^6
c)a=6-1 (a khác 0)
a) 38:34=34
b) 108:102=106
c) a6:a = a5