\(=\left(\dfrac{1}{6}\cdot6\right)^2+\dfrac{0.2^5\cdot0.3^5}{0.2^5\cdot0.2}\)
\(=1+\dfrac{0.3^5}{0.2}\)
\(=1+\dfrac{243}{20000}=\dfrac{20243}{20000}\)
B1:Tính
a)(-2/3+3/7):4/5+(-1/3+4/7):4/5
b)5/9:(1/11-5/22)+5/9:(1/15-2/3)
c)4^2.4^3/4^10
d)(0,6)^5/(0,2)^6
e)2^7.9^3/6^5.8^2
g)6^3+3.6^2+3^3/-13
h)(3/7+1/2)^2
i)(3/4-5/6)^2
k)5^4.20^44/25^5.4^5
l)(-10/3)^5.(-6/5)^4
f)(1+2/3-1/4).(4/5-3/4)^2
m)2:(1/2-2/3)^3
n)9.9.(-1/3)^3+1/3
y)(4.2^5):(2^3.1/16)
a ) 4 . 3^x-1 + 2 . 3^x+2 = 4 . 3^6 + 2 . 3^9
b ) 5^x+4 - 3 . 5^x+3 = 2 . 5^11
c ) 11 . 6^x-1 = 11 . 6^11 + 2 . 6^13
Chứng minh rằng:Nếu S=1/22-1/24+1/26-...1/24n-2-1/24n+...+1/22002-1/22004,thì S<0,2
tính
1, 125^5:25^7
2, 27^8:9^9
3,36^5:6^8
4, 49^6:7^10
5, 7^20:49^9
6, 1/2^10:1/8^3
7, (-1/2)^21:1/4^10
8,1/16^5:(-1/2)^18
9,1/5^30:1/25^14
10, 1/125^6:1/25^14
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. \(\dfrac{\left(0,6\right)^5}{\left(0,2\right)^6}\)
Giải giùm mk mấy câu này nha!!!!
Tính
C=\(\dfrac{2^{12}\cdot3^5-4^6\cdot9^2}{\left(2^2\cdot3^6\right)^6+8^4\cdot3^5}-\dfrac{5^{10}\cdot7^3-25^5\cdot49^2}{\left(125\cdot7\right)^3+5^9\cdot14^3}\)
\(2^{-1}+\left(5^2\right)^3\cdot5^{-6}+32-2\cdot\left(-3\right)^2\cdot\dfrac{1}{9}\)
Giúp tui vs
Tính:
1) 6.(\(\frac{2}{3}\))\(^3\)-3. (\(\frac{2}{3}\))\(^3\)-2. (-\(\frac{2}{3}\))+4
2) (\(\frac{2}{3}\))\(^3\)-(\(\frac{3}{4}\))\(^2\).(-1)\(^5\)
3) \(\frac{2^3+3.2^6-4^3}{2^3+3^2}\)
4) \(\frac{4^6.9^5+6^9.12^0}{8^4.3^{12}-6^{11}}\)
5) \(\frac{5^2.20^3-5^4.20^3+5^7.4^5}{20+5^3.4^5}\)
Giúp mình nha. Cảm ơn các bạn trước
4^5 . 9^4 - 2 . 6^9 / 2^10 . 3^8 + 6^8 . 20
