\(\dfrac{2^3.9^3.45}{9^2.10-9^2}=\dfrac{2^3.3^6.3^2.5}{9^2\left(10-1\right)}=\dfrac{2^3.3^8.5}{9^3}=\dfrac{2^3.3^8.5}{3^6}\)
\(=2^3.3^2.5=360\)
\(\dfrac{2^3.9^3.45}{9^2.10-9^2}=\dfrac{2^3.3^6.3^2.5}{9^2\left(10-1\right)}=\dfrac{2^3.3^8.5}{9^3}=\dfrac{2^3.3^8.5}{3^6}\)
\(=2^3.3^2.5=360\)
tính
(2^3.9^2+9^3.45):(9^2.10-9^2)
Tính hợp lý:
(2^3.9^4+9^3.45):(9^2.10-9^2)
Giúp mình nhé mình đang cần gấp
( 2^3.9^4+9^3.45) :9^2.10-9^2 )
\(( 2^3.9^4+9^3.45):(9^2.10-9^2 \))
Cho mình hỏi bài này:
Tính nhanh
25.2^3+75.2^3
3^2.187-87.3^2
4^2.19+80.4^2+4^2
73.5^2+5^2.28-5^2
6^2.48+51.6^2+36
113.7^2-7^2.12-49
(2^3.9^4+9^3.45):(9^2.10-9^2)
a, \(\left[2^3.9^4+9^3.45\right]:\left[9^2.10-9^2\right]\)
b, \(\left[20.2^4+12.2^4-48.2^2\right]:8^2\)
a,M=(5.4^15.9^9-4.3^20.8^9):(5.2^9.6^19-7.2^29.3^18)
b,(2^3.9^4+9^3.45)
Rút gọn biêu thức
A=3^2.45^4-15^3.9^3/3^3.45^4-5^4.3^10
B=6^30.3^11.7-2^31.5.3^40/2^28.17.3^38-6^27.3^11
C=35.27^8+70.9^11/15.81^6-60.3^20
D=4^6.6^7-9^3.8^6/12^5.2^8+18^3.32^3
Tính hợp lí nếu có thể -5/9+5/9:(1/2/3-2/1/12