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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.
\(a,11^8:11^3=11^5\)
\(b,17^{11}:17^9=17^2\)
\(c,4^3:2^2=\left(2^2\right)^3:2^2=2^6:2^2=2^4\)
\(d,a^5:a=a^4\)
!!!
\(a)11^8\div11^3=11^{8-3}=11^5\)
\(b)17^{11}\div17^9=17^{11-9}=17^2\)
\(c)4^3\div2^2=4^3\div4=4^2\)
\(d)a^5\div a=a^4\)
= \(3^8:3^4=\left(3^{8-4}\right)=3^4\)
= \(10^8:10^2=\left(10^{8-2}\right)=10^6\)
\(a^6:a=a^6:a^1=\left(a^{6-1}\right)=a^5\)
\(a,11^8:11^3=11^{8-3}=11^5\)
\(b,17^{11}:17^9=17^{11-9}=17^2\)
\(c,4^3:2^2=4^{3-1}=4^2\)
\(d,a^5:a=a^{5-1}=a^4\)
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.
\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)
\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)
\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)
1)52=2^2.13