Bạn ghi rõ ra đi, mình ko hiểu biểu thức kia là gì

xl mình giải ra rồi bạn ơi

https://olm.vn/hoi-dap/tim-kiem?id=223671728745&id_subject=1&q=+++++++++++T%C3%ACm+gi%C3%A1+tr%E1%BB%8B+c%E1%BB%A7a+bi%E1%BB%83u+th%E1%BB%A9c+:a)+4510%C3%975207515+++++++++++

a)  \(\frac{45^{10}\times5^{20}}{75^{15}}\)

\(=\frac{\left(15\times3\right)^{10}\times5^{20}}{\left(15\times5\right)^{15}}\)

\(=\frac{15^{10}\times3^{10}\times5^{20}}{15^{15}\times5^{15}}\)

\(=\frac{1\times3^{10}\times5^5}{15^5\times1}\)

\(=\frac{3^{10}\times5^5}{\left(3\times5\right)^5}\)

\(=\frac{3^{10}\times5^5}{3^5\times5^5}\)

\(=3^5=243\)

A= (9¹⁰.5¹⁰​.5¹⁰​)/(25¹⁰​.3^​10)=(3^​20​.5²⁰​)/(5^​20.3^​10)=3^​10

​B=(0,8)^​5/(0,4)⁶= (2.0,4)⁵​/0,4.0,4⁵ ​= 2⁵.0,4⁵/0,4.0,4⁵ = 2^​5​/0,4 = 80

​C= 2¹⁵.9⁴​/6^​6.8³= 2_​^​15​.3⁸​/3⁶.2⁶.2⁹=2^​15.3⁸/3⁶.2^​15=3²=9

bo deo quantam

ta có \(\frac{45^{10}.5^{20}}{75^{15}}=\frac{\left(3^2.5\right)^{10}.5^{20}}{\left(5^2.3\right)^{15}}=\frac{3^{20}.5^{10}.5^{20}}{5^{30}.3^{15}}=3^5=243\)

hậu quả của việc chép sai đề là đây : mỏi tay , nhức óc , lại còn k đc ****

tìm giá trị của biểu thức sau

a) 45 mũ 10 . 5 mũ 20 / 75 mũ 15

b) (0,8) mũ 5 / (0,4) mũ 6

c) 2 mũ 15 . 9 mũ 4 / 6 mũ 6 . 8 mũ 3

bài làm là:

a) 45^10.5^20/75 ^ 15

=(5.9)^10.5^20/(5.15)^15

=5^10.9^10.5^20/5^15.15^15

=5^30.3^20/5^15.3^15.5^15

=5^30.3^20/5^30.3^15

=5^30.3^20/5^30.3^15

=3^5

=243

mấy ý kia mình chia tính được ....A,hihi

\(\frac{45^{10}.5^{20}}{75^{15}}\)

\(=\frac{\left(15.3\right)^{10}.5^{20}}{\left(15.5\right)^{15}}\)

\(=\frac{15^{10}.3^{10}.5^{20}}{15^{15}.5^{15}}\)

\(=\frac{3^{10}.5^5}{15^5}=\frac{3^{10}.5^5}{3^5.5^5}=3^5=243\)

\(\frac{45^{10}.5^{20}}{75^{15}}=\frac{\left(9.5\right)^{10}.5^{20}}{\left(3.5.5\right)^{15}}=\frac{9^{10}.5^{10}.5^{20}}{3^{15}.5^{15}.5^{15}}=\frac{9^{10}.5^{30}}{3^{15}.5^{30}}=\frac{9^{10}}{3^{15}}=243\)

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

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

\(=\frac{3^{20}\cdot5^{30}}{3^{15}\cdot5^{30}}\)

\(=3^5=243\)

nhớ nha

a) \(=\frac{\left(3.15\right)^{10}.5^5.5^{15}}{75^5}=\frac{15^5.5^5.3^{10}.15^5.5^{15}}{75^5}=\frac{\left(15.5\right)^5.\left(15.5\right)^{15}.3^{10}}{75^5}=\frac{75^{20}.3^{10}}{75^5}=75^{15}.3^{10}\)

b) \(\frac{2^{15}.9^4}{9^4.9^2.\left(2^3\right)^3}=\frac{2^9.9^4}{2^9.9^4.9^2}=\frac{1}{81}\)