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2x.(x-1/7)=0
=> 2x=0 hoặc x-1/7=0
=> x=0:2 hoặc x=0+1/7
=> x=0 hoặc x=1/7
2x.(x-1/7)=0
=> 2x = 0 hay x-1/7=0
=> x = 0 hay x=1/7
tìm x biết:
(3x-1) [- 1/2x+5]=0
1/4+1/3:(2x-1)=-5
[2x+3/5]2 - 9/25=0
-5(x+1/5)-1/2(x-2/3)=3/2x - 5 /6
[x+1/2]x [2/3-2x]=0
17/2-|2x-3/4|=-7/4
2/3x-1/2x =5/12
(x+1/5)2+17/25=26/25
[x.44/7+3/7].11/5-3/7=-2
3[3x-1/2]+1/9=0
1,-15(x+2)+7(2x-3)
2,x^2+2x=0
3,(-2x)(-4x)+28=100
4,(2x-5)^2-49=0
5,/x-5/+/y-3/=1
6,3×(x-2)-6(x-5)=2(5-2x)
7, 5x ×(-x)^2+1=0
8,4x^3=4x
1.
a.|2x+4|+|4x+8|=0|2x+4|+|4x+8|=0
b.|x−5|+|x−7|=0|x−5|+|x−7|=0
c.|x+8|−|2x+2|=0
Tìm x
3x - 4(2x-7)=3x-3
3(2x-7)-(4-2x) =2x-1
(x-2).(2x+12)=0
1, (x - 4/7) : (x+1/2) > 0
2, (2x - 3) : (x+7/4) < 0
/2x-1/+/y+3/=0
/3x-y+2/+/x-1/=0
/2y+3/+/7-2x+y/=0
tìm x,y
Tìm x, y thuộc Z
a) 3 (x + 2) + 2 (x - 3) = 5x - 7
b) 4(2x+1)-7(x-2)-x=15
c) (x-3)(2x+10)=0
d) (7-x)(x+3)>0
e) (x2+7)(x2-7)<0
f) (2x-3)(2y+3)=17
g) (2x-3)(y+3)=24
tim x biet:a.2x^2-1=17/8;b.(2x-0,05)(x+3)>0;c.(7-x)(x+19)>0
tìm x , biết :
a, (x-1/5).(x-1+3/5)<0
b,(x-4/7):(x+1/2)>0
c,(2x-3):(x+1+3/4)
d,|2x-1|+1=2x
Tìm x
1)7.(x-1) +2x.(x-1) =0
2)2x.(x-3)+9x-27=0
3)4.(x-1/2)+4.(5-x)=9/2
