2x - 183 = 23 . 32
2x - 183 = 8 . 9 = 72
2x = 72 + 183
2x = 255
x = 255 : 2
x = 127,5
( 2x - 1 )3 - 2 = 25
( 2x - 1 )3 = 25 + 2
( 2x - 1 )3 = 27
( 2x -1 )3 = 33
=> 2x - 1 = 3
2x = 3 + 1
2x = 4
x = 4 : 2
x = 2
tim x nguyen biet:
a 8.(x mu 2 +3).(5-x)
b)(2x + 1)mu 2=25
c) (1-3x)mu3 =64
d)(4-x)mu3 =-27
e) xmu2 -5x =0
bài 1:
a. S2 = 21+23+25+...+1001
b. S4 = 15+25+35+..+115
bài 2:
a. 2x-138= 23 .32
b. 5.(x+35) = 515
c. 814- ( x-305)=712
d. 20 - [ 7(x-3) +4] =2
e. 9x-1 =9
e. 5x-2 -32 = 24 - (28. 22 - 210 . 22)
(2x+1)mu3=27 giup mk nha
5x-7=3x-15
Xmu2=16
(2x-1)mu3=-27
708-3:(x+3 mu 1)=407
2.x+15=134:2
114-2.(2x+11)=80
12.x-33=3 mu 2. 3 mu3
200-8.(2.x+7)=112
2 mu 4:(x+1)+2=6
2448-(5.x+148)=2. 10 mu 3
125:x+100=125
2.x-138=8.9
145-x=98+32
Giup em giai nhung bài nay ho a
1)
a) 12:{390:[5.10 mu2-(5 mu3+7 mu2.x)]}=4
b) 3+2 mux-1=24-[4 mu2-(2 mu2-1)
c) (2x-6)mu2016=(2x-6)mu16
d) (x+1)+(x+2)+(x+3)+...+(x+30)=795
e) 2 mu x+2 mu x+4=272
Ai là người giải nhanh mình tick cho.Nhưng phải trả lời trước thứ 5 đấy nhé!
123-5.(x+4)=38
10+2x=2.(32-1)
2.x-138=23.32
[102+(28-2x)]:20-5=1
231-(x-6)=1339:13
2x-138=2^3.2^2
3^3+2^2-(6x-12)=1
x:(12^3/4^3)=27
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
