a) 38 : 34 + 22 . 23 b) 3.42-2.32 c) \(\frac{4^6.3^4.9^5}{6^{12}}\) d) \(\frac{21^2.14.125}{35^3.6}\) e) \(\frac{45^3.20^4.18^2}{180^5}\)g) \(\frac{2^{13}+2^5}{2^{10}+2^2}\)
Các bạn trình bày cách làm luôn nha. MK trân thành cản ơn
rút gọn phân số
a)\(\dfrac{4^6.3^4.9^5}{6^{12}}\)
b)\(\dfrac{21^2.14.125}{35^2.6}\)
c)\(\dfrac{45^3.20^4.18^2}{180^5}\)
d)\(\dfrac{2^{13}+2^5}{2^{10}+2^2}\)
a: \(=\dfrac{2^{12}\cdot3^{14}}{3^{12}\cdot2^{12}}=3^2=9\)
b: \(=\dfrac{7^3\cdot2\cdot5^3}{5^2\cdot7^2\cdot6}=7\cdot5\cdot\dfrac{1}{3}=\dfrac{35}{3}\)
d: =2^5(2^8+1)/2^2(2^8+1)=2^3=8
c: \(=\dfrac{5^3\cdot3^6\cdot2^8\cdot5^4\cdot3^4\cdot2^2}{2^{10}\cdot3^{10}\cdot5^5}=5^2\)
Tính:
a)\(\frac{4^6.3^4.9^5}{6^{12}}\)
b)\(\frac{2^{13}+2^5}{2^{10}+2^2}\)
c)\(\frac{21^2.14.125}{35^3.6}\)
d)\(\frac{8^{10}+4^{10}}{4^{10}+2^{10}}\)
e)\(\frac{45^3.20^4.18^2}{180^5}\)
Gấp lắm ạ.
\(a\)
\(\frac{4096.81.59049}{2176782336}\)
\(b\)
\(\frac{2^{13+5}}{2^{10+2}}\)=\(\frac{2^{18}}{2^{12}}\)
Tính giá trị của các biểu thức :
a , A = \(\frac{2^{10}.13+2^{10}.65}{2^8.104}\)
b , B = \(\frac{4^9.36+64^4}{16^4.100}\)
c , C = \(\frac{72^3.54^2}{108^4}\)
d , D = \(\frac{4^6.3^4.9^5}{6^{12}}\)
e , E = \(\frac{2^{13}+2^5}{2^{10}+2^2}\)
f , F = \(\frac{21^2.14.125}{35^5.6}\)
g , G = \(\frac{45^3.20^4.18^2}{180^5}\)
h , H = \(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
mấy bn lm giúp mk nha , mk tk cho 3 tk
a) A= 2^10.13+2^10.65/2^8.104
b) B= 4^9.36+64^4/16^4.100
c) C= 72^3.54^2/108^4
d) D= 4^6.3^4.9^5/6^12
e) E= 2^13+2^5/2^10+2^2
f) F= 21^2.14.125/35^5.6
g) G= 45^3.20^4.18^2/180^5
h) H= 11.3^22.3^7-9^15/(2.3^14)^2
Tính giá trị biểu thức
a)3 mũ 8:3 mũ 4+2 mũ 2.2 mũ 3
b)4 mũ 6.3 mũ 4.9 mũ 5: 6 mũ 12
c)21 mũ 2.14.125:35 mũ 3.6
d)45 mũ 3.20 mũ 4. 18 mũ 2:180 mũ 5
e)2 mũ 13+2 mũ 5:2 mũ 10+2 mũ 2
Giải: (^ là mũ)
a) 3^8 : 3^4 + 2^2 . 2^3
= 6561 : 81 + 4 . 8
= 81 + 32
= 113
Mấy câu sau bn làm tương tự nhé!
b: \(=2^{12}\cdot3^4\cdot\dfrac{3^{10}}{3^{12}\cdot2^{12}}=3^2=9\)
c: \(=\dfrac{7^2\cdot3^2\cdot7\cdot2\cdot5^3}{5^3\cdot7^3\cdot2\cdot3}=\dfrac{3^2}{3}=3\)
d: \(=\dfrac{5^3\cdot3^6\cdot5^4\cdot2^8\cdot3^{16}\cdot2^2}{\left(2^2\cdot3^2\cdot5\right)^5}=\dfrac{5^{10}\cdot3^{22}\cdot2^{10}}{2^{10}\cdot3^{10}\cdot5^5}=3^{12}\cdot5^5\)
Tính giá trị biểu thức :
C = \(\frac{21^2.14.125}{35^3.6}\)
D = \(\frac{45^3.20^4.18^2}{180^5}\)
\(C=\frac{21^2.14.125}{35^3.6}\)
\(C=\frac{\left(3.7\right)^2.2.7.5^3}{\left(5.7\right)^3.2.3}\)
\(C=\frac{3^2.7^2.2.7.5^3}{5^3.7^3.2.3}\)
\(C=\frac{3^2.7^3.2.5^3}{5^3.7^3.2.3}=3\)
\(D=\frac{45^3.20^4.18^2}{180^5}\)
\(D=\frac{\left(5.3^2\right)^3.\left(2^2.5\right)^4.\left(2.3^2\right)^2}{\left(2^2.3^2.5\right)^5}\)
\(D=\frac{5^3.3^6.2^8.5^4.2^2.3^4}{2^{10}.3^{10}.5^5}\)
\(D=\frac{5^7.3^{10}.2^{10}}{2^{10}.3^{10}.5^5}=5^2=25\)
tính giá trị biểu thức :
38 : 34 + 22 . 23 b 3 . 42 - 2 . 32
c \(\dfrac{4^6.3^4.9^5}{6^{12}}\) d \(\dfrac{21^2.14.125}{35^3.6}\) e \(\dfrac{45^3.20^4.18^2}{180^5}\)
g \(\dfrac{2^{13}+2^5}{2^{10}+2^2}\)
Viết cách làm ra hộ mk nha. Bạn nào nhanh mk tick cho
a, =\(3^4+2^5=81+32=113\)
b, =\(3.\left(4^2-2.3\right)=3.\left(16-6\right)=3.10=30\)
c, =\(\dfrac{2^{12}.3^4.3^{10}}{2^{12}.3^{12}}=\dfrac{2^{12}.3^{14}}{2^{12}.3^{12}}=3^2=9\)
d, =\(\dfrac{3^2.7^2.2.7.5^3}{5^3.7^3.2.3}=3\)
e, =\(\dfrac{3^6.5^3.2^8.5^4.2^2.3^4}{2^{10}.3^{10}.5^5}=\dfrac{3^{10}.2^{10}.5^7}{2^{10}.3^{10}.5^5}=5^2=25\)
g, =\(\dfrac{2^5.\left(2^8+1\right)}{2^2.\left(2^8+1\right)}=\dfrac{2^5}{2^2}=2^3=8\)
giúp mk với mk cần gấp:
bài1:tính giá trị biểu thức:
a) A= 2^10.13+2^10.65/2^8.104
b) B= 4^9.36+64^4/16^4.100
c) C= 72^3.54^2/108^4
d) D= 4^6.3^4.9^5/6^12
e) E= 2^13+2^5/2^10+2^2
f) F= 21^2.14.125/35^5.6
g) G= 45^3.20^4.18^2/180^5
h) H= 11.3^22.3^7-9^15/(2.3^14)^2
D=\(\frac{2^{13}+2^5}{2^{10}+2^2}\)
B= \(\frac{2^2.14.125}{35^3.6}\)
C=\(\frac{45^3.20^4-18^2}{180^3}\)
B=\(\frac{2^2.14.125}{35^3.6}\)
B=\(\frac{2^2.2.7.5^3}{5^3.7^3.2.3}\)
B=\(\frac{2^3.7.5^3}{5^3.7^3.2.3}\)
B=\(\frac{2^2}{7^2.3}\)
=\(\frac{4}{49.3}\)=\(\frac{4}{147}\)