Tìm x biết, X+1/125+x+2/124+x+3/123+x+4/122+x+146/5=0
Tìm x:
a) 7/2 - x = 0,75
b) 2| x - 1/3 |+1/5 = 1
c) ( 2/3 -x )^3 - 1/125 = 0
Cảm ơn mb nhiều lắm :3
Tìm x biết :\(\frac{x+1}{125}+\frac{x+2}{124}+\frac{x+3}{123}+\frac{x+4}{122}+\frac{x+126}{5}=0\)
B1. Tính giá trị: A=(x+2)^2 - (x-2)^2 với x=125
B2. Thu gọn:
a, 2x.(2x-1)^2 - 3x.(x+3).(x-3) - 4x.(x+1)^2
b. (3x+1)^2 - 2.(3x+1).(3x+5) + (3x+5)^2
B3: Tìm x biết (x+2)^2 - x^2 +4=0
Tìm x biết
2/7x + 1/2 = -3/4
( 6x + 2/5 ) = -8/125
| x - 2/3 | . ( 18 - 6x mũ 2 ) = 0
Giúp m với m cần gấp ạ please nhanh ạ
Chứng minh : \(\frac{\left(5^4-5^3\right)}{125^4}=\frac{64}{125}\)
Tìm x
a)\(^{3^x}+^{3^{x+2}}=810\)
b)\(\left(x+\frac{2017}{2018}\right)^6=0\)
1/ Tìm x biết:
a) \(\frac{-15}{12}:\)\(| \frac{-5}{6}:x |\) = \(\frac {-5}{9}\)
b) | 2.x-3 | = 5 - x ( 5 - x 0 )
c) | 2.x | - | -2,5 | = | -7,5 | ( x > 0 )
d) | x | = x + 2 ( x + 2 0 )
e) \((\frac {1} { 2 } . x -3 )\) . \(( \frac { 2 } {3} .x + \frac {1}{2})=0\)
g) | 1 - 3.x | = x - 7 ( x - 7 0 )
2/ Tính
a) ( 1000 - 13 ).( 1000 - 23 )....( 1000 - 503 )
b) \(( \frac{1}{125} - \frac{1}{1^3} ).( \frac{1}{125}- \frac{1}{2^3})....( \frac{1}{125} - \frac{1}{25^3})\)
(1/125-1^3)x(1/125-2^3)x...(1/125-25^3)
Tìm x, biết:
a) \(\dfrac{2}{3}\)x - \(\dfrac{1}{2}\)x = \(\left(-\dfrac{7}{12}\right)\) . \(1\dfrac{2}{5}\)
b) \(\left(\dfrac{1}{5}-\dfrac{3}{2}x\right)^2\) = \(\dfrac{9}{4}\)
c) (1,25 - \(\dfrac{4}{5}\)x)3 = -125