Viết gọn các tích sau bằng cách dùng lũy thừa :
a) 5 . 5 . 5 . 5 . 5 . 5 . 5
b) 6 . 6 . 6 . 3 . 2
c) 2 . 2 . 2 . 3 . 3
d) 100 . 10 . 10 . 10
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a) 56
b) 23. 32
c) 6.6.6.3.2=6.6.6.6=64
d)100.10.10.10=10.10.10.10.10=105
a) 5 . 5 . 5 . 5 . 5 . 5 . 5 = 56
b) 6 . 6 . 6 . 3 . 2 = 63 . 61
c) 2.2.2.3.3 = 23 . 32
d) 100 . 10 . 10 . 10 = 102 . 103
a) \(5^6\)
b)\(6×6×6×6=6^4\)
c)\(2^3.3^2\)
d)\(10×10×10×10×10=10^5\)
1) 3 . 3 . 9 . 33 = 3 . 3 .3 . 3. 3 . 11 = 35 . 11
2) 100 . 10 . 10 . 5 . 2 = 10 . 10 . 10 . 10 . 10 = 105
3) 3 . 3 . 7 . 21 = 3 . 3 . 3 .7 . 7 = 33 . 72
4) 5 . 2 . 5 . 5 . 2 . 5 . 2 . 2 . 2 . 5 = 55 . 25
5) a . a . b . a . b = a3 . b2
a) 5.5.5.5.5 = 55
b) 6.6.6.6.3.2 = 6.6.6.6.(3.2) = 6.6.6.6.6 = 65
c) 2.2.2.2.3.3 = 24.32
d) 100.10.10.10.10 = 10.10.10.10.10.10 = 106
a) 5.5.5.5.5.5 = 56
b ) 6. 6. 6. 3 . 2 = 6.6.6.6 = 64
c) 2 . 2.2.3.3 = 23 . 32
d) 100 . 10 . 10 .10 = 10 . 10 .10 .10 .10 = 105
a) 5 . 5 . 5 . 5 . 5 . 5 = 56
b) 6 . 6 . 6 . 3 . 2 = 6. 6. 6. 6 = 64 ;
c) 2 . 2 . 2 . 3 . 3 = 23 . 32;
d) 100 . 10 . 10 . 10 = 10. 10. 10. 10. 10 = 105
\(7\cdot7\cdot7\cdot7=7^4\)
\(2\cdot2\cdot5\cdot2\cdot2=\left(2\cdot2\cdot2\right)\cdot\left(5\cdot5\right)=2^3\cdot5^2\)
\(3\cdot5\cdot15\cdot15=3\cdot5\cdot5\cdot3\cdot3\cdot5=\left(3\cdot3\cdot3\right)\cdot\left(5\cdot5\cdot5\right)=3^3\cdot5^3\)
\(1000\cdot10\cdot10=10\cdot10\cdot10\cdot10\cdot10=10^5\)
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.
\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)
\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)
\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)
a)5.5.5.5.5.5=56
b)6.6.6.3.2=6.6.6.6=64
c)2.2.2.3.3=6.6.2=62.2
d)100.10.10.10=10.10.10.10.10=105
Nguyễn ĐÌnh Dũng sai rồi, ai li ke vậy