\(\left|x\left(x^x-\frac{5}{4}\right)\right|=0\)
\(\Rightarrow x\left(x^x-\frac{5}{4}\right)=0\)
\(\Rightarrow x=0\) hoặc \(x^x-\frac{5}{4}=0\)
\(\Rightarrow x=0\) hoặc \(x^x=\frac{5}{4}\Rightarrow x=\frac{\sqrt{5}}{2}\)
Vậy \(x\in\left\{0;\frac{\sqrt{5}}{2}\right\}\)
Tìm x :
a , ( x -2 ) ( x + 7 ) bé hơn bằng 0.
b , ( x - 3 ) ( x - 4 ) bé hơn bằng 0 .
c , ( 3x + 1 ) ( x - 4 ) < 0.
d , ( x - 1 ) ( 2x - 1 ) > 0
Tìm x biết
( x+1 ).( x-2 ) >0 ;
( x-2 ).( x-3 ) >0 ;
x ( x-4 ) >0 ;
x ( x-4 ) <0
Tìm x biết
a,(x-1).(x+4)<0
b,x.(4-x)>0
c,(1-3x).(8+x)<0
d,2x+6/4-x>0
Tìm x: a)|x-1|+2x+2=0
b)|x-5|+(3y-4)^100=0
c)(x+2)(x-4)=0
Tìm x: (x+3).(x-4)-(x+5).(4-x)=0
Tìm x: a)x*x+2*x-3=0 c)x*x+x+1=0 e)x*x-4*x+4=0
b)2*x*x+3*x+1=0 d)x*x-x-6=0
Bài 1 : tìm x biết
a) ( /x/ - 1/4 ) . ( x2 - 9 ) = 0
b) ( /x/ + 2 ) . ( /x/ - 4 ) = 0
c) ( x2 - 1/4 ) . ( x2 - 1/10 ) = 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
a) (5x-1)(2x-1/3)=0
b) (x^2+1)(x-4)=0
c) 2x^2 -1/3x=0
d) (4/5)^5.x=(4/5)^7
e)Tìm x thuộc z để A=x+5/x-2 có giá trị nguyên
4 Tìm x :
(x+2).(4-x)=0 ; d) (x+1)+(x+3)+(x+5)+...+(x+99)=0
