`2^(x-1) + 2^x +2^(x+1) = 112 `
`=> 2^(x-1) + 2^(x-1) xx 2 +2^(x-1) xx 2^2 = 112 `
`=> 2^(x-1) . (1 + 2 + 2^2) = 112 `
`=> 2^(x-1) . 7 = 112 `
`=> 2^(x-1) = 16`
`=> 2^(x-1) = 2^4`
`=> x - 1 = 4`
`=> x = 5`
(x - 1) (y + 2 ) = 7
giup minh minh nhanh len cac ban oi
giai giup bai nay voi cac ban oi !: (5x+1- 61) : 22 =24
co ai giup minh voi khong ,giup minh tra loi hai cau hoi nay voi !
Viet tich sau duoi dang mot luy thua :x . x2 .x3 .x4 .x5....x49 .x50 .x51 .x52
Tim cac so tu nhien x,y sao cho:(x+1) (y-2) =2
moi nguoi oi giup minh di chu !
Tìm x thuộc Z biết:
/x+1/+/x+2/=1
giup mình vs
cac ban oi giup minh voi
1.tim a,b thuoc Z,biet:a.(2b-3)=-6
2.cho x,y thuoc Z thoa man x mu 2 +y mu 2 chia het cho 3.chung to x va y chia het cho 3.
tim x biet
/ 2x+1/+/x-2/=0
/x+5/=2x-1
/x+1/+/x+2/=/5x-3/
giup mik vs mai mik nop roi
|2x+1|+|4x+1|+|6x+1|=5
|x+1/2|+|x+1/3|+|x+1/4|=x
Giai giup mik vs😊😊
moi nguoi oi giup minh voi, ca cach giai nua nhe, dung thi minh se tich cho. thank you moi nguoi
tim x biet
x^2 - 1 < 15
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
