\(\dfrac{5^4.20^4}{25^5.4^5}=\dfrac{5^4.\left(4.5\right)^4}{\left(5^2\right)^5.4^5}=\dfrac{5^5.5^4.4^4}{5^{10}.4^5}=\dfrac{1}{4.5}=\dfrac{1}{20}\)
Tính
\(\dfrac{5^4}{25^5}\).\(\dfrac{20^4}{4^5}\)=
Lũy Thừa Của Một Số Hữu Tỉ (Tiếp Theo) Bài 1.
a) (3/7 + 1/2)^2
b) (3/4 - 5/6)^2
c) 5^4 . 20^4/25^5 . 4^5
d) (-10/3)^5 . (-6/5)^4
Tính :
\(M=\dfrac{8^{20}+4^{20}}{4^{25}+64^5}\)
\(\dfrac{5^{^4}\cdot20^4}{25^5\cdot4^5}\)
\(\dfrac{5^4\cdot20^4}{25^5\cdot4^5}\)
a. (4x +7)2= 25 phần 36
b. ( 5+2x)3= -- 8
c. 3x ×9=243
d. 42x= ( -- 64 ) . ( -- 4 )\(\)
Tính
\(\dfrac{5^4.20^4}{25^5.4^5}\)
\(\left(1+\dfrac{2}{3}-\dfrac{1}{4}\right).\left(\dfrac{4}{5}-\dfrac{3}{4}\right)^2\)
Tính
\(a.\left(\dfrac{3}{7}+\dfrac{1}{2}\right)^2;b.\left(\dfrac{3}{4}-\dfrac{5}{6}\right)^2;c.\dfrac{5^4.20^4}{25^5.4^5};c.\left(\dfrac{-10}{3}\right)^5.\left(\dfrac{-6}{5}\right)^4\)
(-10 phần 3)5×(-6 phần 5)4
