\(a,=\dfrac{1}{27}.1000=\dfrac{1000}{27}\\ b,=\dfrac{16}{81}:16=\dfrac{1}{81}\\ c,=\dfrac{16}{81}.81=16\)
(1/3)^3.10^3 = 1000/27
(-2/3)^4:2^4 = 1/81
(2/3)^4.9^2 = 16
Tính giá trị biểu thức
\(\dfrac{2^8-2^3}{2^5-1}\)
\(\dfrac{4^8.9^4}{6^6.8^3}\)
\(\dfrac{27^4.2^3-3^{10}.4^3}{6^4.9^3}\)
1. Tìm |15|, |-3|, |0|
2. Vẽ trục số, biểu diễn trên trục số ba số hữu tỉ: -1/2 ; 1/2 ; 3/2
GẤP GẤP MỌI NGƯỜI ƯI
1.
A= 2.8^4.27^2+4.9^9/2^7.6^7+2^7.40.9^4
B= (2/3)^3 . (-3/4)^2.(-1)^5/(22/5)^2.(-5/12)^3
2. Tìm số tự nhiên x, biết:
a, 4^x+4^x+3= 4160
b, 2^x-1+5.2^x-2=7/32
Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!
Tính.
1, ( 1 + \(\frac{2}{3}\)- \(\frac{1}{4}\)) . ( 0,8 - \(\frac{3}{4}\))2
2, \(\left(\frac{1}{3}\right)^{50}\). 925 - \(\frac{2}{3}\): 4
3. \(\frac{2^4.2^6}{\left(2^5\right)^2}\)- \(\frac{2^5.15^3}{6^3.10^2}\)
1) Tính hợp lý
a)11/125-17,28-5/3+4/9+17/4
b)1-1/2+2-2/3+3-3/4+4-1/2-3-1/3-2-1/2-1
2) Tìm x,y, biết
|1/2-1/3+x|=-1/4-|y|
GIÚP MÌNH VỚI Ạ. MÌNH CẢM ƠN NHIỀU Ạ
(2/3)^3-4.(-1 3/4)^2+(-2/3)^3
giúp mình vs ạ :))
Thực hiện phép tính:
a) A=\(\left(-\frac{3}{4}+\frac{2}{3}\right):\frac{5}{11}\) b)B=\(\left(-\frac{2}{3}+1\right)-\left(\frac{7}{5}-0,2\right)+\left(\frac{7}{15}-1+\frac{4}{3}\right)\)
c) C=\(\frac{^{^{2^4.2^6}}}{\left(2^5\right)^2}-\frac{2^5.15^3}{6^3.10^2}\)
(3-1/4+2/3) - (5-1/3-6/5) - (6-7/4+3/2) (6-2/3+1/2) - (5+5/3-3/2)-(3-7/3+5/2)
(5/3-3/7+9)-(2+5/7-2/3)+(8/7-4/3-10) (8-9/4+2/7)-(-6-3/7+5/4)-(3+2/4-9/7 )
mọi người ơi giúp mik với ạ
Bài 1. Tìm x, biết:
a/ 1/4.(x-3)+2=1/5
b/ 1/7-2.(x+1)=1/4+2/3
c/ 1/4.(2x+3)-1/9=2/5
d/ 3/2.(x+1)-4/9=2/3
e/ 4/5.(2-3x)+4/7=2và1/3
[Cần gấp ạ!]
thực hiện phép tính
a)\(\frac{27^4.2^3-3^{10}.4^3}{6^4.9^3}\)
b) \(\left(\frac{1}{4.9}+\frac{1}{9.14}+\frac{1}{14.19}+...+\frac{1}{44.49}\right).\frac{1-3-5-7-...-49}{89}\)
