=\(\left[\dfrac{\left(0,4.2\right)^5}{\left(0,4\right)^6}+\dfrac{2^9.2^6.3^8}{\left(3.2\right)^6.2^9}\right]=\left[\dfrac{\left(0,4\right)^5.2^5}{\left(0,4\right)^6}+\dfrac{2^6.3^8}{3^6.2^6}\right]\)

=\(\left[\dfrac{2^5}{0,4}+3^2\right]\)

=\(\left[80+9\right]=89\)

\(\left[\dfrac{\left(2.0,4\right)^5}{0,4,0,4^5}+\dfrac{2^{15}.3^8}{3^6.2^6.2^9}\right]\div\dfrac{3^{20}.5^{30}}{3^{15}.5^{30}}\)

\(=\left[\dfrac{2^5.0.4^5}{0,4.0,4^5}+\dfrac{2^{15}.3^8}{3^6.2^{15}}\right]\div3^5\)

\(=\left[\dfrac{2^5}{0,4}+3^2\right]\div243\)

\(=80+\left(3^5\div3^2\right)\)

\(=80+3^3\)

\(=80+27\)

\(=107\)

\(\dfrac{8^{14}}{4^4.64^5}=\dfrac{\left(2^3\right)^{14}}{\left(2^2\right)^4.\left(2^5\right)^5}=\dfrac{2^{42}}{2^8.2^{25}}=2^{42-\left(8+25\right)}=2^9\)

\(\dfrac{9^{10}.27^7}{81^7.3^{15}}=\dfrac{\left(3^2\right)^{10}.\left(3^3\right)^7}{\left(3^4\right)^7.3^{15}}=\dfrac{3^{20}.3^{21}}{3^{28}.3^{15}}=\dfrac{3^{20+21}}{3^{28+15}}=\dfrac{3^{41}}{3^{41}.3^2}=\dfrac{1}{3^2}=\dfrac{1}{9}\)

a, \(4^3.5^3=\left(4.5\right)^3=20^3=8000\)

b, \(6^3.5^3=\left(6.5\right)^3=30^3=27000\)

c, \(8^2.5^2=\left(8.5\right)^2=40^2=1600\)

d, \(125^3.8^3=\left(125.8\right)^3=1000^3\)

e, \(5^2.6^2.3^2=\left(5.6.3\right)^2=90^2\)

đây nhé

câu b =80 nha bn

a)45¹⁰.5²⁰/75¹⁵=(5.9)¹⁰.5²⁰/75¹⁵=5¹⁰.9¹⁰.5²⁰/75¹⁵=5³⁰.9¹⁰/75¹⁵=5³⁰.9¹⁰/ (25.3)¹⁵=5³⁰.3²⁰/5³⁰.3¹⁵=3⁵=243

b)(0,8)⁵/0,4⁶=(0,4.2)⁵/0,4⁶=0,4⁵.2⁵/0,4⁶=2⁵/0,4=32/0,4=80

1. Tính :

a. \(\dfrac{9^6.9^{10}}{3^{32}}\)

b. \(\dfrac{25^8.25^{10}}{5^{34}}\)

c. \(\dfrac{7^{56}}{49^9.49^{20}}\)

d. \(\dfrac{4^2.4^3}{2^{10}}\)

e. \(\dfrac{2^{17}.25^5}{10^8.8^3}\)

f. \(\dfrac{3^{15}.25^4}{15^6.8^3}\)

2. Tính lũy thừa âm :

a. 3^-2 b. 2^-3

3. Tính :

a. \(\dfrac{\left(0,8\right)^{17}}{\left(0,4\right)^3}\)

b. \(\dfrac{\left(0,8\right)^3}{\left(0,4\right)^4}\)

c. \(\dfrac{\left(0,6\right)^5}{\left(0,2\right)^6}\)

Xin lỗi mk viết lộn mk định hạ xuống mà bấm nhầm gửi câu trả lời....

cứ phan tích cho hết đi là đc 9^6. 9^10 = (3^2)^6...................

tự làm đi

1.Tính

(0,25)⁴.1024=(1/4)⁴.1024=4

2.So sánh

2⁹¹=(2¹³)⁷=8192⁷

5³⁵=(5⁵)⁷=3125⁷

Mà 8192>3125=> 8192⁷>3125⁷

=> 2⁹¹>5³⁵

3. Tìm giá trị biểu thức

a) \(\dfrac{45^{10^{ }}.5^{20^{ }}}{75^{15}}=\dfrac{\left(3^{2^{ }}.5\right)^{10^{ }}.5^{20}}{^{ }\left(3.5^2\right)^{15}}=\dfrac{3^{20}.5^{30}}{3^{15}.5^{30}}=3^5=243\)

b)\(\dfrac{\left(0,8\right)^5}{\left(0,4\right)^6}=\dfrac{\left(2.0,4\right)^5}{0,4.0,4^5}=\dfrac{2^{5^{ }}.0,4^5}{0,4.0,4^5}=\dfrac{2^5}{0,4}=80\)

c)\(\dfrac{2^{15}.9^4}{6^6.8^3}=\dfrac{2^{15^{ }}.3^8}{3^6.2^6.2^9}=\dfrac{2^{15}.3^8}{3^6.2^{15}}=3^2=9\)

Tic hộ tui đi !!! chúc bn hok tôts

a) \(\dfrac{2^{15}.9^4}{6^6.8^3}=\dfrac{2^{15}.\left(3^2\right)^4}{\left(2.3\right)^6.\left(2^3\right)^3}=\dfrac{2^{15}.3^8}{3^6.2^6.2^9}=\dfrac{2^{15}.3^8}{3^6.2^{15}}=3^2=9\)

b) \(\dfrac{45^{15}.5^{15}}{75^{15}}=\dfrac{\left(9.5\right)^{15}.5^{15}}{\left(3.25\right)^{15}}=\dfrac{9^{15}.5^{15}.5^{15}}{3^{15}.25^{15}}=\dfrac{\left(3^2\right)^{15}.5^{30}}{3^{15}.\left(5^2\right)^{15}}\)

\(\dfrac{3^{30}.5^{30}}{3^{15}.5^{30}}=3^{15}=14348907\)

c) \(\dfrac{8^{10}+4^{10}}{8^4+4^{11}}=\dfrac{\left(2^3\right)^{10}+\left(2^2\right)^{10}}{\left(2^3\right)^4+\left(2^2\right)^{11}}=\dfrac{2^{30}+2^{20}}{2^{12}+2^{22}}=\dfrac{2^{20}\left(2^{10}+1\right)}{2^{12}\left(1+2^{10}\right)}\)

\(=\dfrac{2^{20}}{2^{12}}=2^8=256\)

d) \(\dfrac{ \left(x^2\right)^5}{\left(x^5\right)^2}=\dfrac{x^{10}}{x^{10}}=1\)

b)\(\frac{\left(0,8\right)^5}{\left(0,4\right)^6}=\frac{\left(2.0,4\right)^5}{\left(0,4\right)^6}=\frac{2^5.\left(0,4\right)^5}{\left(0,4\right)^6}=\frac{2^5}{0,4}=\frac{2^5}{\frac{2}{5}}=\frac{2^4}{5}=\frac{16}{5}\)

c)\(\frac{2^{15}.9^4}{6^6.8^3}=\frac{2^{15}.3^{12}}{3^6.2^6.2^9}=3^6\)

a)\(\frac{45^{10}.5^{20}}{75^{15}}=\frac{15^{10}.3^{10}.5^{20}}{5^{15}.15^{15}}=\frac{3^{10}.5^5}{15^5}=\frac{3^{10}.5^5}{5^5.3^5}=3^5\)

Thanks bn!!

\(\frac{45^{10}\cdot5^{20}}{75^{15}}=\frac{\left(3^2\cdot5\right)^{10}\cdot5^{20}}{\left(5^2\cdot3\right)^{15}}\)  

=\(\frac{3^{20}\cdot5^{10}\cdot5^{20}}{5^{30}\cdot3^{15}}=\frac{3^{20}\cdot5^{30}}{5^{30}\cdot3^{15}}=3^5=243\)  

k cho ah nha