2x+1=32
Mà: 25=32
=>2x+1=25
=>x+1=5
=>x=5-1
=>x=4
2x + 1 = 32
2x + 1 = 25
=> x + 1 = 5
=> x = 5 - 1
=> x = 4
( 3x -1) mu 5 = 32
9 x - 1 ) mu 2 = ( 2x - 3 ) mu 2
bai 3 tim x , biet;
a, 3 mu x =81 b, 2 mu x-3=16 c, 5 mu 2x-3=25 d, [x-1]mu 5=32 e, [2x+3]mu 2 =49 f, 2[5-x]mu 2=49
1.tim x thuoc n biet:
a)3 mu x .3 b)x mu 20 = x c)2 mu x.16 mu 2=1024 d)64.4 mu x=16 mu 8
2.tim n thuoc n sao:
a)3 mu 2.3 mu n=3 mu 5 b)(2 mu 2:4).2mu n=4 c)32<2 mu n<128 d)2.16>_2 mu n>4
ai giai dung va nhanh minh tick cho
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
tim n E N;
A, 2 mu 2 =32
27. 3 mu n= 243
64. 4mu n=4 mu 5
9 mu 2.3 mu n=3 mu 7
1) tim x thuoc n biet:
a) 3 mu 4 - x = 81
b) 5 mu x -1 = 125
c) (2 - x) mu 3=27 mu 0
d)3 mu x + 2 -3 mu x +1=182
e) 2 mu x -1 -2 mu x =16
8 mu 2 . 32 mu 4
câu 3 : 8 mu 2 nhan 32 mu 4
câu 4: 64 mũ 3 nhân 256 mu 2
1 tim 1 chu so tan cung
a , 67 mu 103
b, 52 mu 135
c, 32 mu 80 nhan 19 mu 25
