(45^10 . 5^20):75^15
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(=\dfrac{\left(3^2\cdot5\right)^{10}\cdot5^{20}}{\left(3\cdot5^2\right)^{15}}=\dfrac{3^{20}\cdot5^{10}\cdot5^{20}}{3^{15}\cdot5^{30}}=3^5=243\)
\(\frac{45^{10}\cdot5^{20}}{75^{15}}=\frac{9^{10}\cdot5^{10}\cdot5^{20}}{3^{15}\cdot25^{15}}=\frac{3^{20}\cdot5^{30}}{3^{15}\cdot5^{30}}=3^5\)
\(\dfrac{45^{10}.5^{20}}{75^{15}}=\dfrac{\left(5.3^2\right)^{10}.5^{20}}{\left(5^2.3\right)^{15}}=\dfrac{5^{21}.3^{20}}{5^{30}.3^{15}}=\dfrac{1.3^5}{5^9.1}=\dfrac{3^5}{5^9}\)
Mk làm hơi tắt còn kết quả mk vẫn để lũy thừa vì nếu => số
Chúc bn học tốt
\(\dfrac{45^{10}\cdot5^{20}}{75^{15}}\\ =\dfrac{\left(3^2\cdot5\right)^{10}\cdot5^{20}}{\left(5^2\cdot3\right)^{15}}\\ =\dfrac{\left(3^2\right)^{10}\cdot5^{10}\cdot5^{20}}{\left(5^2\right)^{15}\cdot3^{15}}\\ =\dfrac{3^{20}\cdot5^{30}}{5^{30}\cdot3^{15}}\\ =3^5\\ =243\)
Giải:
\(\dfrac{45^{10}.5^{20}}{75^{15}}\)
\(=\dfrac{\left(3.3.5\right)^{10}.5^{20}}{\left(3.5.5\right)^{15}}\)
\(=\dfrac{3^{10}.3^{10}.5^{10}.5^{20}}{3^{15}.5^{15}.5^{15}}\)
\(=\dfrac{3^{20}.5^{30}}{3^{15}.5^{30}}\)
\(=3^5=243\)
Vậy giá trị của biểu thức trên là 243.
Chúc bạn học tốt!!!
\(\dfrac{45^{10}.5^{20}}{75^{15}}=\dfrac{3^{20}.5^{30}}{3^{15}.5^{30}}=3^5=243\)
Ta có : \(\frac{45^{10}.5^{20}}{75^{15}}=\frac{9^{10}.5^{10}.5^{20}}{3^{15}.25^{15}}=\frac{\left(3^2\right)^{10}.5^{30}}{3^{15}.\left(5^2\right)^{15}}=\frac{3^{20}.5^{30}}{3^{15}.5^{30}}=3^5\)
\(\frac{45^{10}.5^{20}}{75^{15}}=\frac{\left(3^2.5\right)^{10}.5^{20}}{\left(3.5^2\right)^{15}}=\frac{3^{20}.5^{10}.5^{20}}{3^{15}.5^{30}}\)
\(=\frac{3^{20}.5^{30}}{3^{15}.5^{30}}=\frac{3^5.1}{1.1}=3^5=243\)
\(\frac{45^{10}\cdot5^{20}}{75^{15}}=\frac{3^{20}\cdot5^{30}}{3^{15}\cdot5^{30}}=3^5=243\)
\(\frac{45^{10}.5^{20}}{75^{15}}=\frac{3^{20}.5^{10}.5^{20}}{3^{15}.5^{30}}=\frac{3^{20}.5^{30}}{3^{15}.5^{30}}=3^5=243\)
.Check mk nhá •<3 •