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a) 25 . 84 = 25 . (23)4 = 25 . 212 = 217
b) 256 . 1253 = (52)6 . (53)3 = 512 . 59 = 521
c) 6253 : 257 = (252)3 : 257 = 256 : 257 = 0,04
a) 2.84 = 2.(23)4 = 2.212 = 213
b) 256 . 1253 = (52)6 . (53)3 = 512.59 = 521
c) 6255 : 257 = (54)5 : (52)7 = 520:514 = 56
d) 123.33 = (12.3)3 = 363
e) 23.84.163 = 23.(23)4.(24)3 = 23.212.212 = 227
f) 643 . 43 : 163 = (43)3 . 43 : (42)3 = 49.43:46 = 412:46 = 46
G) 812 : ( 32 . 27 ) = (34)2 : 32 . 33 = 38 : 32 . 33 = 36.33 = 39
a) 2 . 84=2.(22)4=2.28=21+8=29
b) 256 . 1253=(22)6.(53)3=212.59=212+9=221
c) 6255 : 257=(54)5:(52)7=520:514=520-14=56
d) 123 . 33=(12.3)3=363
e) 23 . 84 . 163=23.(23)4.(24)3=23.212.212=23+12+12=227
f) 643 . 43 : 163=(43)3.43:(42)3=49.43:46=49+3-6=46
g) 812 : ( 32 . 27 )=(34)2:(32.33)=38:32+3=38:35=38-5=33
a) 25 . 84 = 25 . ( 23 )4 = 25 . 212 = 217
b) 256 . 1253 = ( 52 )6 . ( 53 )3 = 512 . 59 = 521
c) 6255 : 257 = ( 54 )5 : ( 52 )7 = 520 : 514 = 56
d) 123 . 33 = ( 12 . 3 )3 = 363
a) 25.84 = 25.(23)4 = 25.212 = 217
b) 256.1253 = (52)6.(53)3 = 512.59 = 521
c) 6255: 257 = (54)5 : ( 52)7 = 520 : 514 = 56
d) 123 . 33 = (4.3)3 . 33 = (22)3 . 33. 33 = 26. 36
\(2^5.4=2^5.2^2=2^7\);\(5^4.25=5^4.5^2=5^6\); \(16^3.2^3=\left(2^4\right)^3.2^3=2^{12}.2^3=2^{15}\)
\(625^5:25^7=\left(5^4\right)^5:\left(5^2\right)^7=5^{20}:5^{14}=5^6\); \(25^6:125^3=\left(5^2\right)^6:\left(5^3\right)^3=5^{12}:5^9=5^3\)
\(12^4.3^4=\left(2^2.3\right)^4.3^4=2^8.3^4.3^4=2^8.3^8=6^8\); \(9^6:3^2=\left(3^2\right)^6:3^2=3^{12}:3^2=3^{10}\)
\(2^3.2^4.2=2^8\)
a)213
b)521
c)56
d)43
e)227
còn lại tự nghĩ,mệt lắm rùi
a) \(25^6\cdot125^3=\left(5^2\right)^6\cdot\left(5^3\right)^3=5^{12}\cdot5^9=5^{21}\)
b) \(625^5:25^7=\left(5^4\right)^5:\left(5^2\right)^7=5^{20}:5^{14}=5^6\)
c) \(12^3\cdot3^3=\left(12\cdot3\right)^3=36^3\)
a) 25. 84= 25. (23)4= 25. 212= 25+12= 217
b) 256. 1253= (52)6. (53)3= 512. 59= 512+9= 521
c) 6255:257= (54)5: (52)7= 520: 514= 520-14= 56
25.84=25.(23)4=25.212=217
256.1253=(52)6.(53)3=512.59=517
6255:257=(54)5:(52)7=520:214=56
Bạn làm sai rồi
25^6.125^3=5^21