Bài 1 : tìm x biết
a) ( /x/ - 1/4 ) . ( x2 - 9 ) = 0
b) ( /x/ + 2 ) . ( /x/ - 4 ) = 0
c) ( x2 - 1/4 ) . ( x2 - 1/10 ) = 0
d) ( x + 2 ) . ( x - 3 ) < 0
e) ( x - 1/4 ) . ( x + 1/2 ) > 0
Bài 1 : Tìm x biết
a) ( /x/ - 1/4 ) . ( x2 - 9 ) = 0
b) ( /x/ + 2 ) . ( /x/ - 4 ) = 0
c) ( x2 - 1/4 ) . ( x2 - 1/16 ) = 0
d) ( x + 2 ) . ( x - 3 ) < 0
e) ( x - 1/4 ) . ( x + 1/2 ) > 0
Tìm x biết
( x+1 ).( x-2 ) >0 ;
( x-2 ).( x-3 ) >0 ;
x ( x-4 ) >0 ;
x ( x-4 ) <0
Tìm x,y biết :
|x-4|+|6-x|=0
|x+1|-|x-2|=0
|x+2|-|x-3|=0
|x-2|-|x-3|=0
|2x-1|-|x+1|=0
4x-6+2x=12
1. Tìm x
|x+1|+|x+2|+|x+3|+|x+4|=5.x
2. Tìm GTNN của
A=|x+2000|+|x-2018|
3. Tìm x,y,z biết
a) |x+1|+|2.y-4|=0
b) |x-y+1|+(y-3)^2=0
c) |x+y|+|x-z|+|2.x-1|=0
Tìm biết : /x/ - /x-1/ + / x+2/ = 0
/ x+3/ - 2x = / x - 4/
/ x + 3 / . ( x mũ 2 + 1 ) = 0
x . ( x - 1 ) = x
Tìm biết : /x/ - /x-1/ + / x+2/ = 0
/ x+3/ - 2x = / x - 4/
/ x + 3 / . ( x mũ 2 + 1 ) = 0
x . ( x - 1 ) = x
Tìm x biết
1 . x^2 -x = 0
2. x^3 -9x =0
3 . 2x^3 -8x= 0
4. x^3 =x
5. x^3 -16x=0
Tìm x, biết :
|x-3| + |x-5| = 4 ;
x+1 > 0 ;
x-2 >0 ;
x+2 <0 .