\(\dfrac{1}{x}+\dfrac{1}{x\left(x+1\right)}+\dfrac{1}{\left(x+1\right)\left(x+2\right)}+\dfrac{1}{\left(x+2\right)\left(x+3\right)}+\dfrac{1}{\left(x+3\right)\left(x+4\right)}+\dfrac{1}{x+4}\)
\(=\dfrac{1}{x}+\dfrac{1}{x}-\dfrac{1}{x+1}+\dfrac{1}{x+1}-\dfrac{1}{x+2}+...+\dfrac{1}{x+3}-\dfrac{1}{x+4}+\dfrac{1}{x+4}\)
=2/x
Tìm x.
\(1,\dfrac{3}{2}\left(x-\dfrac{1}{3}\right)-\dfrac{1}{2}\left(x+\dfrac{1}{2}\right)=\dfrac{1}{4}\)
\(2,3\left(x-2\right)-4\left(x+2\right)=x+2\)
\(3,4x\left(x-1\right)+4x-2\left(x+1\right)=-2\)
\(4,x\left(x+2\right)-3\left(x-1\right)=3\left(x+1\right)\)
1 tìm x biết
a, (x+1)^2 =169
b, (x+3)^3 = -1/27
c, (2x-4)^4= 1/265
d, (x-1/2) ^3 =1/-279
2 tìm x
a, 3<3^x <234
b, 8.16>2^x > hoặc = 4
c, 2019^x=1
d, x^2019=1
e, 5^x +5^x+2 =650
f, 3^-1 . 3^x + 5.3 ^x-1 =162
g, 32^-x .16^x =1024
Tìm x biết : a) \(\left|x^3-x-1\right|=x^3+x+1\)
b) \(\left|x^4+x^2+1\right|=x^2-x-1\)
Tìm x:
a,/x/+/x-1/+/x-3/=4
b,/x+1/+/x-1/+/x-2/=3
c,2/x/+3/x-1/+/x+1/=5
c)5^x+1-5^x=20 c)2^x+2^x+4=544 c)4^2x+1+4^2x=80 c)3^2x+2+3^2x+1=108 c)7^x+3-7^x+1=16464
-√x+3=-8=>x=?
-√x+3=-4=>x=?
-√x+3=-2=>x=?
-√x+3=-1=>x=?
-√x+3=1=>x=?
-√x+3=2=>x=?
-√x+3=4=>x=?
-√x+3=8=>x=?
hộ tui các chế ơi
Tìm x,biêt
a,(3/2-2.x):2/3+5/6=1
b.(2.x)-(2.x-5/2)-|-2|=x-1/4
c,2.(x-1/3)-1/3.x=-1/4_x
d,2.(x-1/3)-1/3.x=-1/4_x
e,3/2:\|-1|3.x+1/3|\=|5/6-2|
Tìm x
a) 2x+3/24 = 3x-1/32
b) x+1/x-2 = 5/6
c) -(x+1)/25 = -4/x+1
d) (5-x).2/25 = -2/x-5
e) x+1/x+4 = x-3/x-2
Bài 1.Tìm x biết
a, 4|3x - 1| + |x| - 2|x-5| + 7|x-3| = 12 b, 3|x + 4| - |2x + 1| - 5|x + 3| + |x - 9| = 5
c, |x + 5| - |1 - 2x| = x d, |x| - |2x + 3| = x - 1
e, |x| + |1 - x| = x + |x-3| g, |x-2| + |x-5| = 3
f, |2x - 1| + |2x - 5| = 4 m, |x-3| + |x + 5| = 8
n, |x-3| + |3x + 4| = |2x + 1|
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