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mì đi ngủ
mì chịu
mì buồn ngủ lắm
học 3 ca xong mệt rồi
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lúc nào mì trả lời cho
Máy tính, dùng nó là đc
Tối rồi đi ngủ đi, mai mì trả lời cho
a, \(3^4.5^4=\left(3.5\right)^4=15^4\)
b, \(8^3.32^4=\left(2^3\right)^3.\left(2^5\right)^4=2^9.2^{20}=2^{29}\)
c, \(49^2.7^5=\left(7^2\right)^2.7^5=7^4.7^5=7^9\)
d, \(2^3.4^3.16^4=2^3.\left(2^2\right)^3.\left(2^4\right)^4=2^3.2^6.2^{16}=2^{25}\)
Chúc bạn học tốt!!!
a) \(3^4.5^4=\left(3.5\right)^4=15^4\)
b) \(8^3.32^4=\left(2^3\right)^3.\left(2^5\right)^4=2^9.2^{20}=2^{29}\)
c) \(49^2.7^5=\left(7^2\right)^2.7^5=7^4.7^5=7^9\)
d) \(2^3.4^3.16^4=2^3.\left(2^2\right)^3.\left(2^4\right)^4=2^3.2^6.2^{16}=2^{25}\)
Chúc học tốt!!!
a) $3^8:3^6=3^{8-6}=3^2$
$19^7:19^3=19^{7-3}=19^4$
$2^{10}:8^3=2^{10}:(2^3)^3=2^{10}:2^9=2^{10-9}=2^1$
$12^7:6^7=(12:6)^7=2^7$
$27^5:81^3=(3^3)^5:(3^4)^3=3^{15}:3^{12}=3^{15-12}=3^3$
b) $10^6:10=10^{6-1}=10^5$
$5^8:25^2=5^8:(5^2)^2=5^8:5^4=5^{8-4}=5^4$
$4^9:64^2=4^9:(4^3)^2=4^9:4^6=4^{9-6}=4^3$
$2^25:32^4=2^{25}:(2^5)^4=2^{25}:2^{20}=2^{25-20}=2^5$
$18^3:9^3=(18:9)^3=2^3$
\(\cdot3^8:3^6=3^{8-6}=3^2\)
\(\cdot19^7:19^3=19^{7-3}=19^4\)
\(\cdot2^{10}:8^3=2^{10}:\left(2^3\right)^3=2^{10}:2^9=2\)
\(\cdot12^7:6^7=\left(12:6\right)^7=2^7\)
\(\cdot27^5:81^3=\left(3^3\right)^5:\left(3^4\right)^3=3^{15}:3^{12}=3^3\)
\(\cdot10^6:10=10^{6-1}=10^5\)
\(\cdot5^8:25^2=5^8:\left(5^2\right)^2=5^8:5^4=5^4\)
\(\cdot4^9:64^2=4^9:\left(4^3\right)^2=4^9:4^6=4^3\)
\(2^{25}:32^4=2^{25}:\left(2^5\right)^4=2^{25}:2^{20}=2^5\)
\(18^3:9^3=\left(18:9\right)^3=2^3\)
a) 37:35= 32
b)46 :46= 40
C) a4 : a= a3
d) 98:32 =314
e) 85:23 = 212
f) 37:27 = 34
\(a,3^7:3^5=3^2\)
\(b,4^6:4^6=4^0\)
\(c,a^4:a=a^3\)
\(d,9^8:3^2=9^4\)
\(e,8^5:2^3=8^{-7}\)
\(f,3^7:27=3^4\)
a ) 210 : 28 = 210 - 8 = 22
b ) 46 : 43 = 46 - 3 = 43
c ) 85 : 84 = 85 - 4 = 81 = 8
d ) 74 : 74 = 74 - 4 = 70 = 1
a) C1 : =1024 :256 =4
C2 :=22=4
b) C1 :=4096 : 64=64
C2: =43 =64
c) C1= 32768:4096=8
C2 =81=8
d)C1=2041:2041 =1
C2 =70=1
1)Đưa về lũy thừa cùng cơ số 2
82= \(\left(2^3\right)^2=2^6\) 323= \(\left(2^5\right)^3=2^{15}\) 644= \(\left(2^6\right)^4=2^{24}\) 43= \(\left(2^2\right)^{^3}=2^6\)
2)Đưa về lũy thừa cùng cơ số 3
93= \(\left(3^2\right)^3=3^6\) 274= \(\left(3^3\right)^4=3^{12}\) 95= \(\left(3^2\right)^5=3^{10}\) 816= \(\left(3^4\right)^6=3^{24}\)
3)Đưa về lũy thừa cùng cơ số 2
83:42= \(\left(2^3\right)^3:\left(2^2\right)^2=2^9:2^4=2^5\) 162:32= \(\left(2^4\right)^2:2^5=2^8:2^5=2^3\)
\(64^4:4^3=\left(2^6\right)^4:\left(2^2\right)^3=2^{24}:2^6=2^{18}\) 323:82= \(\left(2^5\right)^3:\left(2^3\right)^2=2^{15}:2^6=2^9\)
\(3\times7\times3^4\times7^2=3^5\times7^3\)
a) 3 . 7 . 34 . 72
= ( 3. 34 ) . ( 7 . 72 )
= 35 . 73
= 243 . 343
= 243 . 343
= 83349
b) 4 . 8 . 32
= 32 . 32
= 322
= 1024