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l) 27^8=(33)8=324
=>278:322=324:322
=324-22=32
m) 8^4=(23)4=212
45=(22)5=210
=>84:45=212:210
=212-10=22
a) \(27^8:3^{22}\)
\(=\left(3^3\right)^8:3^{22}\)
\(=3^{24}:3^{22}=3^{24-22}\)
\(=3^2\)
b) \(8^4:4^5\)
\(=\left(2^3\right)^4:\left(2^2\right)^5\)
\(=2^{12}:2^{10}=2^{12-10}=2^2\)
\(a,2^5.8^4=2^5.2^{12}=2^{17}\)
\(b,25^6.125^3=5^{12}.5^9=5^{21}\)
\(c,625^5.25^7=5^{20}.5^{14}=5^{34}\)
\(d,12^3.3^3=\left(12.3\right)^3=36^3\)
a) 25 . 84 = 25 . (23)4 = 25 . 212 = 217
b) 256 . 1253 = (52)6 . (53)3 = 512 . 59 = 521
c) 6255 : 257 = (252)5 : 257 = 2510 : 257 = 253
d) 123 . 33 = (12 . 3)3 = 363
Trả lời:
\(a)\)\(2^5.8^4=2^5.\left(2^3\right)^4=2^5.2^{12}=2^{5+12}=2^{17}\)
\(b)\)\(25^6.125^3=\left(5^2\right)^6.\left(5^3\right)^3=5^{12}.5^9=5^{12+9}=5^{21}\)
\(c)\)Chưa rõ đề.
\(d)\)\(12^3.3^3=\left(12.3\right)^3=36^3\)
\(a,23\cdot24\cdot2=2^4\cdot3\cdot23\)
\(b,52\cdot57\cdot53=2^3\cdot3\cdot13\cdot19\cdot53\)
\(c,30\cdot35\cdot37=2\cdot3\cdot5^2\cdot7\cdot37\)
ko vieets dưới dạng lũy thừa nha em
a}23.24.2
=552.2
=1104
b)52.57.53
=2964.53
=157092
c)30.35.37
=1050.37
=38850
\(5.p.p.5.p^2.q.4.q=\left(5.5.4\right).\left(p.p.p^2\right).\left(q.q\right)=100p^4.q^2\)
a) 24 . 23 = 27 = 128
b) 33 . 3 . 32 = 36 = 729
c) 100.104 = 100 . 10000 = 1000000
d)514 : 512 = 52 = 25
e) 718 : 716 = 72 = 49
f) 39 : 35 = 34 = 81
a) \(2^4.2^3=2^7=128\)
b) \(3^3.3.3^2=3^6=729\)
c) \(100.10^4=10^2.10^4=10^6=1000000\)
d) \(5^{14}:5^{12}=5^2=25\)
e) \(7^{18}:7^{16}=7^2=49\)
f) \(3^9:3^5=3^4=81\)