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\(3^2=3\cdot3=9\)
\(4^{10}=4.4.4.4.4.4.4.4.4.4=1048576\)
\(7^4=7\cdot7\cdot7\cdot7=2401\)
\(8^2=8\cdot8=64\)
34: 32= 34- 2= 32= 9.
33. 34= 33+ 4= 37= 2187.
52. 55= 52+ 5= 57= 78125.
1914: 197= 1914- 7= 197= 893871739.
\(4^8.2^{20}.9^{12}.27^5.81^4.25^{20}.125^4\)
\(=\left(2^2\right)^8.2^{20}.\left(3^2\right)^{12}.\left(3^3\right)^5.\left(3^4\right)^4.\left(5^2\right)^{20}.\left(5^3\right)^4\)
\(=2^{16}.2^{20}.3^{15}.3^{16}.5^{40}.5^{12}\)
\(=2^{16+20}.3^{15+16}.5^{40+12}\)
\(=2^{36}.3^{31}.5^{52}\)
a)
\(2^3=8\\ 2^4=16\\ 2^5=32\\2^6=64\\ 2^7=128\\ 2^8=256\\ 2^9=512\\ 2^{10}=1024 \)
b)
\(3^2=9\\3^3=27\\ 3^4=81\\ 3^5=243\)
c)
\(4^2=16\\ 4^3=64\\ 4^4=256\)
d)
\(5^2=25\\ 5^3=125\\ 5^4=625\)
e)
\(6^2=36\\ 6^3=216\\ 6^4=1296\)
a, 23=8
24=16
25=32
26=64
27 = 128
28= 256
29= 512
210= 1024
b,32 =9
33=27
34=81
35=243
c,42=16
43=64
44=256
Tính giá trị các lũy thừa sau :
a) 25 = 2.2.2.2.2 = 32
b) 34 = 3.3.3.3 = 81
c) 43 = 4.4.4 = 64
d) 54 = 5.5.5.5 = 625
Bài 1 :
a/ \(a^3.a^9=a^{3+9}=a^{12}\)
b/\(\left(a^5\right)^7=a^{5.7}=a^{35}\)
c/ \(\left(a^6\right).4.a^{12}=a^{24}.a^{12}.4=a^{24+12}.4=a^{36}.4\)
d/ \(\left(2^3\right)^5.\left(2^3\right)^3=2^{15}.2^9=2^{15+9}=2^{24}\)
e/ \(5^6:5^3+3^3.3^2\)
\(=5^3+3^5=125+243=368\)
i/ \(4.5^2-2.3^2\)
\(=2^2.5^2-2.3^2\)
\(=2^2.25-2^2.14\)
\(=2^2.\left(25-14\right)\)
\(=2^2.11\)
\(=4.11=44\)
\(a=\left(2^3\right)^2\times\left(2^5\right)^4=2^6\times2^{20}=2^{26}\)
\(b=\left(3^3\right)^3\times\left(3^2\right)^4\times3^5=3^9\times3^6\times3^5=3^{20}\)
8.4^ 2 . 32^4 = 32^ 2. 32^4 = 32.32.32.32.32.332
tương tự nhé bạn
\(3^8=6561\)
\(2^4=16\)
\(19^4=130321\)
38 = 32 . 32 . 32 . 32
= 9 . 9 . 9 . 9
= 92 . 92
= 81 . 81
= 812
= 6561
24 = 2 . 2 . 2 . 2
= 22 . 22
= 4 . 4
= 42
= 16