\(\dfrac{1}{4}\) - (1−x)3 = -2
(1−x)3 = \(\dfrac{1}{4}\) - (-2)
(1−x)3 = \(\dfrac{9}{4}\)
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HA
6 tháng 9 2017 lúc 21:05
tìm x
a,\(\dfrac{6}{7}-\dfrac{3}{4}x=-1\dfrac{1}{2}x-3\)
b\(\left(4x-1\right)^2=\left(4x-1\right)^4\)
c\(\left(\dfrac{4}{5}-\dfrac{3}{4}:x\right)^3=\dfrac{-1}{27}\)
d\(\left|\dfrac{4}{3}-\dfrac{1}{4}x\right|:2\dfrac{1}{3}=0,5\)
giúp mình nhé
HA
12 tháng 9 2017 lúc 12:58
a,\(\dfrac{-4}{5}-\left(\dfrac{2}{3}x+1\dfrac{1}{4}\right)=\dfrac{2}{7}\)
b\(\dfrac{5}{6}+\left(\dfrac{3}{4}-\dfrac{1}{2}:x\right)=\dfrac{-2}{3}\)
c\(\left(\dfrac{4}{5}x-1\dfrac{1}{3}\right):\dfrac{3}{4}=0,7\)
d\(\dfrac{5}{6}-\dfrac{3}{4}x=1\dfrac{1}{3}+0,5x\)
giúp mình nhé mình đang cần gấp
HA
29 tháng 8 2017 lúc 11:39
tìm x
a\(\dfrac{2}{3}x-\dfrac{5}{6}=-1\dfrac{1}{2}x+0,75\)
b\(\left(5x-3\right).\left(2x+5\right)=0\)
c\(\left(\dfrac{5}{6}:x-1\dfrac{1}{4}\right)^4=\dfrac{81}{16}\)
d\(\left|\dfrac{2}{5}x-0,2\right|.1\dfrac{1}{4}-2=1,5\)
giúp mình nhé
tìm x
\(\left(1-\dfrac{1}{2}\right)\)x\(\left(1-\dfrac{1}{3}\right)\)x\(\left(1-\dfrac{1}{4}\right)\)..........x\(\left(1-\dfrac{1}{x}\right)\)=\(\dfrac{1}{2014}\)
HA
28 tháng 8 2017 lúc 20:39
TÌM X
A,\(\dfrac{3}{7}x-2\dfrac{1}{3}=0,5\)
b,\(\dfrac{4}{7}-\dfrac{2}{3}:x=1\dfrac{1}{4}\)
C,\(\left(\dfrac{2}{3}x+2\dfrac{1}{4}\right):3\dfrac{1}{5}=0,75\)
D,\(\left|\dfrac{4}{5}-\dfrac{2}{3}x\right|:\dfrac{1}{4}-\dfrac{2}{3}=1\)
GIÚP MÌNH NHÉ
HA
11 tháng 9 2017 lúc 19:37
tìm x
a,\(\dfrac{5}{6}-\left(\dfrac{3}{6}x-\dfrac{1}{5}\right)=\dfrac{-5}{12}\)
b\(\left(4x-3\right).\left(\dfrac{5}{4}x+2\right)=0\)
c\(\left|\dfrac{7}{8}x-\dfrac{2}{3}\right|-\dfrac{3}{4}=1,5\)
d\(\left(\dfrac{3}{5}x-\dfrac{1}{2}\right)^3=\dfrac{8}{125}\)
giúp mình nhé mình đang cần gấp
a, \(\left(1+\dfrac{1}{2}\right)\left(1+\dfrac{1}{2^2}\right)\left(1+\dfrac{1}{2^3}\right)\left(1+\dfrac{1}{2^4}\right)....\left(1+\dfrac{1}{2^{50}}\right)< 3\)
b, \(\dfrac{1}{2}-\dfrac{1}{2^2}+.........+\dfrac{1}{2^{99}}-\dfrac{1}{2^{100}}< \dfrac{1}{3}\)
AG
30 tháng 3 2021 lúc 20:09
Thực hiện phép tính sau:
\(\left(1-\dfrac{1}{2^2}\right)\left(1-\dfrac{1}{3^2}\right)\left(1-\dfrac{1}{4^2}\right)...\left(1-\dfrac{1}{10^2}\right)\).
1/ 5.\(\left(\dfrac{1}{4}-\dfrac{1}{5}-\dfrac{1}{10}\right)\)<\(\dfrac{x}{20}\)≤3.\(\left(\dfrac{1}{2}-\dfrac{1}{4}-\dfrac{1}{5}\right)\)
Bài 2:Tìm x biết:
a)dfrac{1}{7}+xdfrac{-2}{3}
b)dfrac{-2}{3}:xdfrac{-5}{6}
c)left{dfrac{3}{5}-2xright}.dfrac{5}{8}1
d)dfrac{3}{4}+dfrac{2}{5}xdfrac{29}{60}
e)dfrac{3}{4}+dfrac{1}{4}:xdfrac{2}{5}
f)dfrac{11}{12}-left(dfrac{2}{5}+xright)dfrac{2}{3}
g)left|X+dfrac{1}{3}right|-4dfrac{-1}{2}
h)left(dfrac{1}{32}right)^x.8^{2x}512
i)5,3x+left(-3,3right)x+1,7-4,9
Đọc tiếp
Bài 2:Tìm x biết:
a)\(\dfrac{1}{7}+x=\dfrac{-2}{3}\)
b)\(\dfrac{-2}{3}:x=\dfrac{-5}{6}\)
c)\(\left\{\dfrac{3}{5}-2x\right\}.\dfrac{5}{8}=1\)
d)\(\dfrac{3}{4}+\dfrac{2}{5}x=\dfrac{29}{60}\)
e)\(\dfrac{3}{4}+\dfrac{1}{4}:x=\dfrac{2}{5}\)
f)\(\dfrac{11}{12}-\left(\dfrac{2}{5}+x\right)=\dfrac{2}{3}\)
g)\(\left|X+\dfrac{1}{3}\right|-4=\dfrac{-1}{2}\)
h)\(\left(\dfrac{1}{32}\right)^x.8^{2x}=512\)
i)\(5,3x+\left(-3,3\right)x+1,7=-4,9\)