tính :
27mũ 5 :81 mũ 3=?
125 mũ3 :25 mũ4 =?
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\(5^2\times25^{4^{125^3}}\)
Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k nhé Hiếu Trần
\(\left(6x-3^3\right).5^3=3.5^4\)
\(\Rightarrow\left(6x-27\right)=3\left(5^4\div5^3\right)\)
\(\Rightarrow\left(6x-27\right)=3.5\)
\(\Rightarrow6x-27=15\)
\(\Rightarrow6x=42\)
\(\Rightarrow x=7\)
\(\frac{-3.7^4+7^3}{7^5.6-7^3.2}=\frac{7^3\left(-3.7+1\right)}{7^3\left(7^2.6-2\right)}=\frac{-21+1}{49.6-2=4}=\frac{-20}{290}\)
a) \(12^7:6^7=\left(12:6\right)^7=2^7\)
b) \(27^5:81^3=\left(3^3\right)^5:\left(3^4\right)^3=3^{15}:3^{12}=3^3=27\)
c) \(18^3:9^3=\left(18:9\right)^3=2^3=8\)
d) \(125^3:25^4=\left(5^3\right)^3:\left(5^2\right)^4=5^9:5^8=5\)
a, 127 : 67 = (12 : 6)7 = 27 = 128.
b,275 : 813 = (33)5 : (34)3 = 315 : 312 = 315 - 12 = 33 = 27
c,183 : 93 = (18 : 9)3 = 23 = 8.
d, 1253 : 254 = (53)3 : (52)4 = 59 : 58 = 59 - 8 = 5.
127 : 67 = ( 12:6)7 = 27
275 : 813 = ( 33)5 : ( 34)3 = 315 : 312 = 315-12 = 33
183 : 93 = ( 18:9)3= 23
1253: 254= ( 53)3: ( 52)4= 59 : 58 = 59-8 = 5
(5x-24).73=2.74
5x-16=2.(74:73)
5x-16=2.7
5x-16=14
5x=14+16
5x=30
x=30:5=6
275: 813=(33)5:(34)3=315:312=33=27
1253:254=(53)3:(52)4=59:58=5
27 ^ 5 : 81 ^ 3 = 3 ^ 15 : 3 ^ 12 = 3 ^ 3 = 27
125 ^ 3 : 25 ^ 4 = 5 ^ 9 : 5 ^ 8 = 5