(x - 2)2 - 3x + 6 = 0
=> (x - 2)2 - 3.(x - 2) = 0
=> (x - 2).(x - 2 - 3) = 0
=> (x - 2).(x - 5) = 0
=> \(\orbr{\begin{cases}x-2=0\\x-5=0\end{cases}}\)=> \(\orbr{\begin{cases}x=2\\x=5\end{cases}}\)
(x - 2)2 - 3x + 6 = 0
=> (x - 2)2 - 3.(x - 2) = 0
=> (x - 2).(x - 2 - 3) = 0
=> (x - 2).(x - 5) = 0
=> \(\orbr{\begin{cases}x-2=0\\x-5=0\end{cases}}\)=> \(\orbr{\begin{cases}x=2\\x=5\end{cases}}\)
(x-2).(2x-6)=0
(3x+9).(1-3x)=0
(x2+1).(81-x2) =0
5-|2x-1| = (-6)
|2-x| +2 =x
|x+1|=|x-3|
Tìm số nguyên x, biết
a) x – 2 = -6
b)15 – (x – 7) = -21
c)4.(3x – 4) – 2 = 18
d) (3x – 6) + 3 = 32
e) (3x – 6) . 3 = 32
f) (3x – 6) : 3 = 32
g) (3x – 6) - 3 = 32
h) (3x -2 mũ4 ).7mũ3 = 2.7mũ4
i) |x| = |-7| k) |x+1| = 2
l)|x – 2| = 3
m) x +|-2| = 0
o) 72 – 3.|x + 1| = 9
p) |x+1| = 3 và x+1< 0
q) (x – 2).(x + 4) = 0
(-20.12).(x+3)=0
(2+x).(7+x)=0
104x.(6-x)=0
x^2-3x=0
|2x|-|x-14| 61 với >14
|6-x|.(-8)=-16
A=5.x^3.|x-1|+15 với x=2
B-(x-1)(x+2) với |x|=3
C=(3x-4)(x-6) với (x-1)(x+2)=0
a, x^2 + 3x + 2 = 0
b, x^2 + x - 6 = 0
tìm x,y thuộc Z:
a, -(3y+2)+(4y-5)=0
b,(3x-6)^2+ Iy-2I=0
c, (3x^2+9)x(x^2-4)x(25-x^2)>0
1.Tìm số nguyên x thỏa mãn
(-2+x).(3x-6)=0
(3x+9).(2x+6)=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
1.Tìm số nguyên x biết
|x-3|=|x+7|
|3x+2|+|x-8|
|x+3|+|y-8|=0
|x-5|+|x-3|=0
(x-2)(x+6)=0
x(3x+6)=0
(2x-4)(x3-1)=0
(x-2)(x+7)>0
(x+3)(x+5)>0
(x+2)(x-5)<0
Tìm x
a) 1/3x + 2/5( x - 1 ) = 0
b) (2x - 3 )(6 - 2x ) =0
c) 2|1/2x - 1/3 | - 3/2 = 1/4
d) 3/4 - 2 . | 2x - 2/3 | = 2
e) ( 3x - 1)(-1/2x + 5 ) = 0
g)-5(x + 1/5 ) - 1/2(x - 2/3 ) = 2/3x - 5/6
h) 3(x - 1/2 ) - 5(x + 3/5 ) = -3 + 1/5
i) 60%x + 2/3x = 1/3. 6và1/3 ( 6và1/3 là hỗn số )
1 tìm x
84-2.x=89-271
(3x +1) (x - 2) =0
4 chia hết cho (3x+1)
(2x-6) :(x +1)=0
2.thực hiện phép tính
(-5)^3.2 +8.(-9) -176
6^4: 6^2-84.(-4) +162