\(\left(-1\dfrac{1}{3}\right)\left(-1\dfrac{1}{4}\right)\left(-1\dfrac{1}{5}\right)...\left(-1\dfrac{1}{2012}\right)\)
\(=\dfrac{-4}{3}.\dfrac{-5}{4}.\dfrac{-6}{5}...\dfrac{-2013}{2012}\)
=\(\dfrac{2013}{3}\)
= 671
Tính nhanh:
(-1 1/3). (-1 1/4). (-1 1/5) ... (-1 1/2012)
3\(^{2012}\)\(-3^{2011}+3^{2010}\cdot3^{2009}+3^2-3+1\) VỚI \(\dfrac{1}{4}\)
B= \(\dfrac{1}{3}+\dfrac{1}{3^2}+\dfrac{1}{3^3}+...+\dfrac{1}{3^{ }2011}+\dfrac{1}{3^{2012}}\) với \(\dfrac{1}{2}\)
Bài 1.Tìm x
a,/x-2014/ +/x-2015/+ /x-2016/=2
b,/x-1/+/x+3/ = 4
c,/2x+3/ -2/4-x/=5
d,/x+3/+/x+1/=3x
e,/x-1/+ /x-2/+...+/x-100/= 2500
f,/x+1/+/x+2/+...+/x+100/= 605x
Bài 2, Tìm x ,y
a,/x-2006y/=/x-2012/< 0
b,/x-1/<4
c,/x-2011/>2012
d, (3x-1)^2016 +(5y -3)^2018 <0
\(1)2|x|^{2012}+3|y|^{2013}=5\)
2)\(|x+2|+|x-1|=3-\left(y+2\right)^2\)
3) \(|x-0,2|+|y+0,1|+|x+y+z|=0\)
4) \(|x-2011|+|x-2012|+|x+y|+|x-2013|=2\)
5) \(|x-5|+|1-x|=\dfrac{12}{|y+1|+3}\)
Các bạn giúp mik nhé!! Làm đc ý nào thì làm nhé!!! Cảm ơn
P/s: Ko đc copy bài làm của nhau!!
Bài 1:Tính nhanh
A=1,25+1/3/4-(2-4)^2
B=(4+8/18)+(3/11+(-8)/13+3/4)
C=9(1/-3)^3+1/3-2.(-1/2)^2-1/2.(-1/6)^0
Bài 1:Tính nhanh
A=1,25+1/3/4-(2-4)^2
B=(4+8/18)+(3/11+(-8)/13+3/4)
C=9(1/-3)^3+1/3-2.(-1/2)^2-1/2.(-1/6)^0
Các bn ơi giúp mik câu này nhoa:
3/5-1/4=1/10x-1/2
Ai nhanh tick nha!!!
a) |x-1/3|=11/5 b)2|2x-3|=1/2
c)2|3x-1|+1=5 d)3/2+4/5|x-3/4|=7/4
e)|2x-5|=4 f)|x/2-1|=3
1, ( -2/5 + 3/10 ) : ( 2/-5 + |-4/3 - 2| )
2, 12,5 . -5/7 + 9 3/4 - 1,5 . 5/7
3, -1/4 . -5/13 - 5/4 . -7/13 + 1/1,3
4, ( -3/4 + 5/13 ) : 2/7 - ( 2 1/4 + 8/13 ) : 2/7
5, ( 3 - 3/4 + 2/3 ) - ( 2 - 4/3 - 3/2 ) - ( 1 - 7/3 - 9/2 )
6, -1/3 - 8/35 + -2/9 - 1/135 z+ 4/5 + -4/9 + 3/7
