(2x+1)3=125
(2x+1)3=53
\(\Rightarrow\)2x+1=5
2x=5-1
2x=4
x=4:2
x=2
8.6+288:(x-3)2=50
8.6+8.36:(x-3)2=50
8.(6+36):(x-3)2=50
8.42:(x-3)2=50
7.48:(x-3)2=50
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
bai1
5mu3+3mu5
bai2
(x-1)mu3=125
720/(41-(2*x-5))=2mu 3*5
bai3
1 phan 9 * 3 mu 4 * 3 mu n =3 mu 7
(2 mu 2 chia 4)* 2 mu n = 4
bai4
2 * 2mu2 * 2mu3 * 2mu4 *.......*2 mu100
Tìm x thuộc N biết
a, 2 mũ x . 7 = 56
b, 3 mu x : 9 = 27
c, ( 3 . x 1 ) mu 3 . 4 mu 6 = 4 mu 9
Dấu chấm là dấu nhân nha. phan c minh viet mu 3 o ben tren dau ngoac nha .cac ban dung hieu la 1 mu 3
( x - 1 ) mu 2 : 5 mu 21 = 25 mu 30 . 5
2.3 mu x + 1 = 10.3 mu 12 + 8 : 27 mu 4
( 19x + 2 .5 mu 2) : 14 = ( 13 - 8 ) mu 2
1351 - 2 . ( x + 3) = 4 mu 12 : 8 mu 7 + 3
mong m.n giup mk vs !!!!
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
B1) Tinh
a) 245-4 . [15: 8 +2.(4+3 mu 2 -9)]
b) 375: 5 mu 3 -( 3 mu 8: 3 mu 6 -2 .2 mu 3)
B2: Tim x
a) 2x -2 mu 3 .3 mu 2=138
b) ( 6x- 3 mu 4) . 7 mu 3= 3 . 7 mu 4
c) 1+2+3+..............+x =500500
giải nhanh hộ tớ tớ cần gấp
9[3mu x[ 243
25[5mu x [ 625
9[3 mu n [27
25 [ 5mu h [ 3152
2 mu n + 4.2 mu n =5.2 mũ 5
2 mu n /4=16
6.2 mu n+3.2 mu n =9.2 mu n
3 mu n / 3 mu 2 = 243
bai 1; cho tong M =126 +213+x. Tim x de M chia het cho 3
bai 2; chung to rang tong ; A= 2 + 2 mu 3 + 2 mu 4 + 2 mu 5 + 2 mu 6 +2 mu 7 +2 mu 9 + 2 mu 10 + 2 mu 12 chia het cho 5
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
