Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1.(3x-1/4)^2=36
(3x-1/4)^2=6^2
3x-1/4 =6
3x =6+1/4
3x = 25/4
x =25/4:3
x =25/12
2.(1/4-2x)^3=8
(1/4-2x)^3=2^3
1/4-2x =2
2x =1/4-2
2x =-7/4
x =-7/8
3.(5-7/2x)^2=25
(5-7/2x)^2=5^2
5-7/2x =5
7/2x =0
x =0
4.x+(1/4)^2=25
x+1/16 =25
x =25-1/16
x =399/16
7.(2/5x-3/4)^2=1/9
(2/5x-3/4)^2=(1/3)^2
2/5x-3/4 =1/3
2/5x =1/3+3/4
2/5x =13/12
x =13/12:2/5
x =65/24
8.(3/7-x)^2=1/49
(3/7-x)^2=(1/7)^2
3/7-x =1/7
x =3/7-1/7
x =2/7
9.(2/3x+1/4)^3=125
(2/3x+1/4)^3=5^3
2/3x+1/4 =5
2/3x =5-1/4
2/3x =19/4
x =19/4:2/3
x =57/8
10.(-3/4x+1/4)^2=25/16
(-3/4x+1/4)^2=(5/4)^2
-3/4x+1/4 =5/4
-3/4x =5/4-1/4
-3/4x =1
x =1:-3/4
x =-4/3
11.2.(x+1/4)^2=1/4
2x^2+1/8 =1/4
2x^2 =1/4-1/8
2x^2 =1/8
x^2 =1/8:2
x^2 =1/16
x =1/4
1,2,3 ko bt lm nhé
4. \(4\cdot\left(3x-4\right)-2=18\\ 12x-16-2-18=0\\ 12x=-36\\ x=-2\)
5. ( 105-x)/25=30+1
(105-x) / 32 = 1+1
( 105-x) / 32 = 2
105-x=64
x=105-64
x=41
6. 2x - 138=22*32
2x-138=36
2x=138+36
2x=174
x=87
7.(6x-39)*28=5628
6x-39=201
6x=240
x=40
8. (9x+2)*3=60
9x+2=20
9x=18
x=2
9. (26-3x)/5+71=75
(26-3x) /5=4
26-3x = 20
3x=6
x=2
1,1/3+1/2:X= -4
1/2:X= -4-1/3
1/2:X= -13/3
X=1/2 : -13/3
X= -3/26
1. 1/3 + 1/2 : x = -4
=> 1/2 : x = -4 - 1/3
1/2 : x = -13/3
=> x = 1/2 : (-13/3)
x = -3/26
2. 3x - 30%.x = -5,4
3x - x = -18
2x = -18
=> x = -18 : 2
x = -9