2x-1=(2x-1)2
=> (2x-1)2-(2x-1)=0
=> (2x-1).(2x-1-1)=0
=>(2x-1).(2x-2)=0
= > 2x-1=0 ; 2x-2=0
=> 2x=1;2x=2
=> x=1/2;1
2x-1= (2x-1)^2
<=>+ 2x-1= 1
=> 2x=2
=> x=1
<=> +2x-1=0
=> 2x=1
=> x=0,5
=> x={ 0,5;1}
1. Tìm x
a. 2.(4-3x)+2x=5(2x-3)
b. \(\dfrac{1}{2}-\left(2x-\dfrac{1}{3}\right)^2=\dfrac{7}{18}\)
7, Tìm x
a) \(\dfrac{1}{4}-\left|x+\dfrac{1}{2}\right|=\dfrac{1}{8}\) b) |2x-5|=x+3
c) |2x+1|-2x=6 d) |x-5|+x=5
tìm x
a,3 4/5 : 8/5 = 0,25 :x
b, 2x+3/24 = 3x-1/32
c, 13x-2/2x+5=76/17
Tìm X
a) (\(\dfrac{1}{4}\) - X) ( X + \(\dfrac{2}{5}\) ) = 0
b) I 2x + 1 I +\(\dfrac{2}{3}\) = 2
c) (2x - 3 )\(^2\) = 36
d) 7\(^x\) + 2 +2 x 7\(^x\) = 357
2. Tìm x
a. \(\dfrac{4}{5}-3.\left|x\right|=\dfrac{1}{5}\) b. \(4x-\dfrac{1}{2}x+\dfrac{3}{5}x=\dfrac{4}{5}\)
c. (2x-8)(10-5x)=0 d. \(\dfrac{3}{4}+\dfrac{1}{4}\left|2x-1\right|=\dfrac{7}{2}\)
7. Tìm x
a. |2x-5|+3x=12 b. |x+1|+|x+2|+|x+3|=4x
c. |x2+|x+2||=x2+3 d. |x2-3|=6
1,tính a,2/3-(2-1/3)+3/2+(0,75) mũ 0
b,5/4+5/6:(3/8-1/6)+11/12
c,(2/3)mũ 3 :(2/3)mũ 2 +(-1/2):1,5
2, tìm x
a,(3x-3)3-(5x-3)2=0
b,2x=3y và xy=24
Bài 2:Tìm x
a) |x-2|-\(\dfrac{3}{5}\)=\(\dfrac{1}{2}\)
b) (x-\(\dfrac{7}{3}\)):\(\dfrac{-1}{3}\)=0,4
c) |x-3|=5
d) (2x+3)\(^2\)=25
e) \(\dfrac{3}{4}\)+\(\dfrac{1}{4}\): x=\(\dfrac{2}{5}\)
f) (x-\(\dfrac{1}{2}\))\(^3\)=\(\dfrac{1}{27}\)
Làm nhanh giúp mik vs ạ(đang rất cần, cảm ơn nhiều ạaa!!!!!)
11. Tìm x
a) (2x-8)(10+2x)≥0
b) (|x|+5)(x-3)<0
Tìm x
a) 6x(5x + 3) + 3x(1 – 10x) = 7 b) (3x – 3)(5 – 21x) + (7x + 4)(9x – 5) = 44
c) (x + 1)(x + 2)(x + 5) – x2(x + 8) = 27
d) 5x(12x + 7) – 3x(20x – 5) = - 100
e) 0,6x(x – 0,5) – 0,3x(2x + 1,3) = 0,138
