TH1: \(\left\{{}\begin{matrix}x-2>0\\x+\dfrac{2}{3}>0\end{matrix}\right.\)
=>\(\left\{{}\begin{matrix}x>2\\x>-\dfrac{2}{3}\end{matrix}\right.\)
=>x>2
TH2: \(\left\{{}\begin{matrix}x-2< 0\\x+\dfrac{2}{3}< 0\end{matrix}\right.\)
=>\(\left\{{}\begin{matrix}x< 2\\x< -\dfrac{2}{3}\end{matrix}\right.\)
=>\(x< -\dfrac{2}{3}\)
|x+3| + |x-y| =0
|x-1| + (y-2)2 =0
|x-3| + |x-2y+1| =0
|x-2| + |3x .y-5| =0
|x-2| - 3|2-x| =-10
|x-3|+ |x-y+1|=0
|x-1| + (y+5)2020 =0
a) x( x-2 ) lớn hoặc bằng 0
b)x (x - 2 ) nhỏ hơn hoặc bằng 0
c) x+ 2/ 3 -x > 0
d) x+2/3-x < hoặc =0
e) (x^2 -2) * ( 16- x ^ 2) < hoặc bằng 0
Tìm x
(3^2-2^3)x+3^2.2^2=4^2.3
x^5-x^3=0
(x-1)^2+(-3)^2=5^2.(-1)^100
(2x-1)^2-(2x-1)=0
Tìm x
a)2x^2-3x=0
b)x+1/2 - x-2/3 = 1/2
c) x^3-x^2=0
a) 5/2 - x + 4/5 = 2/3 + 4/7
b) ( x - 1 ) x ( x + 2 )< 0
c) ( x + 3/5 ) x ( x+ 1 )<0
d) ( x - 1/3 ) x ( x + 2/5 )>0
Tìm x, x thuộc Q:
a) (x +1) * (x - 2) < 0
b) (x - 2) * (x + 2/3) > 0
c) x + 1/2 * (x - 1/3) < 0
tìm x
(x-1).(x+3)<0
(2-1).(x+5) >0
(x-5).(x+1/2)>0
(x+1).(x-3/2)<0
Tìm x,y biết :
a)|x-1/2|+|3-2y|=0
b)2|x-3/2|+y^2=0
c)|x|-x|=0
Bài 1 : tìm số hữu tỉ x
1, (3 .x + 1/5) . ( x - 1/2 ) = 0
2, ( x - 3/2 ) . (2 .x +1 ) > 0
3, (2 - x ) . ( 4 /5 -x ) < 0
Bài 1 : Tìm x
a) 2/3 - 1/3 (x-3/2)-1/2(2x+1)=5
b) (x+1/2)(X-3/4)=0
c) 1/3 x + 3/5 (x+1)=0
d)x-8/2 > 0
e) x:(2/9 - 1/5 )=1/2
g) 1/3 + 1/2 : x = 1/5
Nhanh Nha
