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\(\frac{9.3^3.1}{81.3^2}=\frac{3^5}{3^6}=\frac{1}{3}=\sqrt{\frac{1}{9}}\)
Các câu còn lại tương tự
a) 9.33.1/81.32=32.33.3-4.32=33
b)4.25:(23. 1/16)=22.25:(23.2-4)=27:2-1=27:(1/2)=27.2=28
c) 32.25.(2/3)2=32.25.22/32=27
d) (1/3)2.1/3.92=3-2.3-1.34=31
thank you
\(a,4.2^5:\left(2^3\cdot\dfrac{1}{16}\right)\\ =4.2^5:\left(2^3\cdot\dfrac{1}{2^4}\right)\\ =2^2.2^5:\dfrac{1}{2}\\ =2^7:\dfrac{1}{2}=2^7.2=2^8\)
\(b,3^2.2^5\left(\dfrac{2}{3}\right)^2\\ =\left(3\cdot\dfrac{2}{3}\right)^2.2^5\\ =2^2.2^5=2^7\)
\(c,\left(\dfrac{1}{3}\right)^2\cdot\dfrac{1}{3}.9^2\\ =\left(\dfrac{1}{3}\right)^3.3^4\\ =\left(\dfrac{1}{3}\right)^3.3^3.3\\ =\left(\dfrac{1}{3}.3\right)^3.3\\ =1^3.3=1.3\\ =3=3^1\)
a) \(4.2^5:\left(2^3\dfrac{1}{16}\right)\) \(=2^2.2^5:2^3:\dfrac{1}{16}\)
\(=2^7:2^3.16\)
\(= 2^4 . 2^4 = 2^8\)
b) \(3^2.2^5.\left(\dfrac{2}{3}\right)^2\) \(=3^2.2^5\)\(.\dfrac{2^2}{3^2}\)
\(=2^5.2^2=2^7\)
c) \(\left(\dfrac{1}{3}\right)^2.\) \(\dfrac{1}{3}.9^2\) \(=\left(\dfrac{1}{3}\right)^3.\left(3^2\right)^2\)
\(=\dfrac{1^3}{3^3}.3^4\)
\(=1^3.3\) \(= 3^1\)
HỌC TỐT NGHEN ~~~
a: \(=3^2\cdot3^3\cdot3^{-4}\cdot3^2=3^{2+3-4+2}=3^3\)
b: \(=2^2\cdot2^5:\left(2^3\cdot\dfrac{1}{2^4}\right)=2^7:\dfrac{1}{2}=2^8\)
c: \(=9\cdot32\cdot\dfrac{4}{9}=128=2^7\)
d: \(=\dfrac{1}{27}\cdot3^4=3^1\)
a) 9 . 33 . 1/81 . 32
=32.33.1/34.32
=33
b) 4 . 25 : (23 . 1/16)
=22.25:(23.1/24)
=22.25:1/2
=22.24
=22+4
=26
c) 32 . 25 . (2/3)2
=32.25.22/32
=25.22
=25+2
=27
d) (1/3)2 . 1/3 . 92
=1/32.1/3.(32)2
=1/32.1/3.34
=1/32.33
=3
=31
a: \(=3^2\cdot3^5:3^4=3^{2+5-4}=3^3\)
b: \(=2^3\cdot2^4:\left(\dfrac{8}{16}\right)=\dfrac{2^7}{2}=2^6\)
c: \(=3^7\cdot3^3=3^{10}\)
d: \(=5^3\cdot5^2\cdot\dfrac{1}{5^4}=5^1\)