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a. 82. 324 = 26. 220 = 226
b. 273. 94. 243 = 39. 38. 35 = 322
c. 5 .125 . 625 = 5 . 53. 54 = 58
d.10 . 100 . 1000 = 10 . 102. 103 = 106
e. 84. 165. 32 = 212. 220. 25 = 237
f. 274 . 8110 = 312. 340 = 352
\(A=8^2\cdot324=8^2\cdot18^2=144^2=\left(12^2\right)^2=12^4\)
\(B=27^3\cdot9^4\cdot243=\left(3^3\right)^3\cdot\left(3^2\right)^4\cdot3^5=3^9\cdot3^8\cdot3^5=3^{22}\)
\(C=6^2\cdot36^4\cdot216^2=6^2\cdot\left(6^2\right)^4\cdot\left(6^3\right)^2=6^2\cdot6^8\cdot6^6=6^{16}\)
\(D=3^4\cdot81^2\cdot9^5=3^4\cdot\left(3^4\right)^2\cdot\left(3^2\right)^5=3^4\cdot3^8\cdot3^{10}=3^{22}\)
a: \(A=\left(2^3\right)^2\cdot\left(2^5\right)^4=2^6\cdot2^{20}=2^{26}\)
b: \(=\left(3^3\right)^3\cdot\left(3^2\right)^4\cdot3^5=3^9\cdot3^8\cdot3^5=3^{22}\)
\(A=8^2.32^4=\left(2^3\right)^2.\left(2^5\right)^4=2^6.2^{20}=2^{26}\)
\(B=27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5=3^9.3^8.3^5=3^{22}\)
a)
49:44=45
178:175=173
210:82=210:24=26
1810:310=1510
275:813=315:312=33
b)106:102=104
59:56=53
410:643=4
225:324=225:220=25
184:94=94
\(4^9:4^4\)
=\(4^{9-4}\)
=\(4^5\)
\(17^8:17^5\)
=\(17^{8-5}\)
= \(17^3\)
\(2^{10}:8^2\)
\(=2^{^{ }10}:\left(2^3\right)^2\)
=\(2^{10}:2^6\)
\(=2^4\)
\(18^{10}:3^{10}\)
=\(\left(18:3\right)^{10}\)
=\(6^{10}\)
a: \(A=8^2\cdot32^4=2^6\cdot2^{20}=2^{26}\)
b: \(B=27^3\cdot9^4\cdot243=3^9\cdot3^8\cdot3^5=3^{22}\)
A) 243 : 33 = 35 : 33 = 32
B) 76 : 49 = 76 : 72 = 74
C) b22 : b5 = b17
a, 243:3^3= 3^5 : 3^3 =3^2
b, 7^6 : 49 = 7^6 : 7^2 = 7^4
c, b^22 : b^5 = b^17
\(A=8^2.32^4=2^6.2^{20}=2^{26}\)
\(\Rightarrow2^{26}\)
\(B=27^3.9^4.243=3^9.3^8.3^5=3^{22}\)
\(\Rightarrow3^{22}\)
TL
a . x ∈ ∅ b . x=-10, x=-5177/5000, x=-10173/10000.
HT
a ) \(A=8^2.32^4=\left(2^3\right)^2.\left(2^5\right)^4\)
\(=2^6.2^{20}\)
\(2^{6+20}=2^{26}\)
b ) \(B=27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5\)
\(=3^9.3^8.3^5=3^{9+8+5}\)
\(=3^{22}\)
a) A= 8^2 . 32^4
= (23)2 . (25)4
= 2^6 . 2^20 = 2^26
b) B= 27^3 . 9^4 . 243
= (3^3)^3 . (3^2)^4 . 3^5
= 3^9 . 3^8 . 3^5
=3^22
\(27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5=3^9.3^8.3^5=3^{22}\)
nhớ tick
Đề hơi sai nên mình sửa lại xíu :>>
Phần b mình lười viết dưới dạng phân số nên bạn viết dưới dạng phân số giùm mình :>>
a) 82 . 324 = ( 23 )2 . ( 25 )4
= 28 . 220 = 228
b) 815 : 97 = ( 34 )5 : ( 32 )7
= 320 : 321 = \(\frac{1}{3}\)
#)Giải :
a)\(8^2.32^4=\left(2^3\right)^2.\left(2^5\right)^4=2^6.2^{20}=2^{26}\)
b)\(27^3.9^4.243=\left(3^3\right)^3.\left(3^2\right)^4.3^5=3^9.3^8.3^5=3^{22}\)
\(8^2=\left(2^3\right)^2=2^6\)
\(32^4=\left(2^5\right)^4=2^{20}\)
\(\Rightarrow A=2^6.2^{20}=2^{26}\)
\(27^3=3^9\)
\(9^4=3^8\)
\(243=3^5\)
\(\Rightarrow B=3^{21}\)