`3^(3x-2)=9^x`
`=>3^(3x-2)=(3^2)^x`
`=>3^(3x-2)=3^(2x)`
`=>3x-2=2x`
`=>2x+(-3x)`
`=>x=2`
`3^(3x-2)=9^x`
`=>3^(3x-2)=(3^2)^x`
`=>3^(3x-2)=3^(2x)`
`=>3x-2=2x`
`=>2x+(-3x)`
`=>x=2`
tìm X
1/4+2.(3.x-2/3)=1
(1/2+2X). (2x-3)=0
(4x-5).(5/4.x-2)=0
1/9-(2.x+1/2)mũ 2=0
9.(3x-1/2)mũ 2 =4
1/2.x+2/3.x-1=-10/3
X+1/12=-3/9
(x2 + 9) (9x2 -1) = 0
(4x2 -9) (2x-1 -1) =0
( 3x+2) (9-x2 ) =0
(3x+3)2 ( 4x - 42 ) =0
2(x-5) ( x+2) =1
h/1/4-(2x+1/2)2=0
i/25.(3x-1/2)2=16
k/3.(3x-1/2)3+1/9=0
m/x+1/3=3/9
Bài1
a, (-3)^2/9=3
b, (-2)^x/8=-4
c, 3x . (x+5)=0
d, (x+1). (x+3)
e, |3x+1|+ |-2,5|=|-4,5|
f, 4/3-|2x+2|=1
g, 2,7:(3x)=9/4.1/3
Tìm x biết:
(x-3)(x^2+3x+9)-(3x-17)=x^3-12
Tìm x
1) x/7=x-1/9
2) 2x+1/10=3x/5
3) 3(x-2)/7=4x/3
4) -5(x+1)/9=7x/-3x
Giúp mình với :))
5x + x = 39 - 311 : 39
23 + 3x = 56 : 53
9x - 1 = 9
2x : 25 = 1
| x - 3 | = | 5 | + | -7 |
( 3x - 2 )3 = 64
tìm x
x-2/3+3x-5/2+2x/9+-5x+3/9=210/420
Tìm x
a) 2 . ( x - 2 ) + 7 . ( 3 - x ) = -2 . ( 3x - 18 )
b) ( x - 5 ) + 3 . ( 2 + x ) = 3x + 11
c) 4 . ( x + 2 ) + 15 . ( x + 3 ) = 7 ( x - 9 ) + 120
GIÚP MÌNH VỚI Ạ!
a) 4/9 + 4/3x = 7/9
b) (5/2 - x).(-4/7) = 9/14
c) 3x + 3/4 = 2\(\frac{2}{3}\)
d) -5/6 - x = 7/12 + -1/3
CÁC BẠN NÀO GIÚP ĐƯỢC THÌ MIK CẢM ƠN Ạ !!!