Dễ mà,e cứ chia 2 TH là đc
Vd:<0 thì chia ra x+2>0 hoac x<0 và nguoc lai roi tìm x
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Tìm x
(2x-7)+17=6
12-2.(3-3x)=-2
-14+3.(-x+5)=-20
-90:5.(-3-2x)=6
(x+1).(x-3)=0
(2x-2).(x+4)=0
(22+4).(x+3)=0
(5-x).(6-2x)=0
3.(x+1)+5=x+8
-4.(2x+9)-(-8x+3)-(x+13)=0
1) (3x-6)(x+5)+4(x-2)=0
2) 3(x-5)(2x+9)+3x-15=0
3) (x2-16)(12-4x)=0
4) (9-x2)(4x-8)=0
5) (8-x3)(5x-125)=0
6) 4x=8
Bài 1: Tìm x
1/(2.x-5)+17=6
2/10-2.(4-3x)=-4
3/-12+3.(-x+7)=-18
4/24:(3.x-2)=-3
5/-45:5.(-3-2.x)=3
6/x.(x+7)=0
7/(x+12).(x-3)=0
8/(-x+5).(3-x)=0
9/x.(2+x).(7-x)=0
10/(x-1).(x+2).(-x-3)=0
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,x=3x2
2,(x+5)(x-3)-(x-30)=0
3,(2x-6)(x+4)+2(2x-6)=0
4,(2x-5)(x+9)+6x-15=0
3,(2x-5)(x+6)+8x-20=0
tìm x
a, (-1)+3+(-5)+7+(-9)+...+x=600
b, 3.(2-x)+5.(x-6)=-98
c, (x+7).(x+8)=0
d, (x-5)(x2-9)=0
e,(/x/+2).(6-2/x/)=0
f,x.y=-26
m. (2x-1).(y-4)=-13
i (5x+1).(y-1)=4
1) -82-x-(-15)-29-(-6)+x2 (x-3)-9.(2x-7)-16:2 3) (3+2).(x-3)04) (x+3)^2:3-1-105) (x-2).(x^2+1)06) (x-7)^2-1697) x+2 la U78) 2x la Bx-19) (x+7).(4-x)010) (x^2+1).(4x-2).(x-1) hoac 011) (2-x).x^2 hoac 012) /x/+x013) /x/-x014) 3/x/ hoac 5 (vs x thuoc Z)
Đọc tiếp
1) -82-x-(-15)=-29-(-6)+x
2 (x-3)-9.(2x-7)=-16:2
3) (3+2).(x-3)=0
4) (x+3)^2:3-1=-10
5) (x-2).(x^2+1)=0
6) (x-7)^2-16=9
7) x+2 la U7
8) 2x la Bx-1
9) (x+7).(4-x)>0
10) (x^2+1).(4x-2).(x-1) > hoac = 0
11) (2-x).x^2< hoac = 0
12) /x/+x=0
13) /x/-x=0
14) 3</x/ < hoac =5 (vs x thuoc Z)
1, 72-3./x+1/=9
2, 17-(43-/x/)=45
3, 3/x-1/-5=7
4, -12.(x-5)+7.(3-x)=5
5, (x-2) . (x+4)=0
6, (x-2).(x+15)=0
7, (7-x).(x+19)=0
8, -5<x<1
9, /x/<3
10, (x.3).(x-5)<0
x ( x + 3) 02) (2x - 4) x 03) ( x -1)( x + 4) 04) (5 - x)( x - 3) 05) (3x - 9)(2 - 8x) 06) ( x - 7)(12 - x) 07) x ( x + 2)( x + 6) 08) (4x +12)(1- x) 09) (6x -18)( x - 5) 010) (16 - 8x) x 0
Đọc tiếp
x ( x + 3) = 0
2) (2x - 4) x = 0
3) ( x -1)( x + 4) = 0
4) (5 - x)( x - 3) = 0
5) (3x - 9)(2 - 8x) = 0
6) ( x - 7)(12 - x) = 0
7) x ( x + 2)( x + 6) = 0
8) (4x +12)(1- x) = 0
9) (6x -18)( x - 5) = 0
10) (16 - 8x) x = 0