(x+1) mu x+1 = x+1 mu x+11 tim x
tim so tu nhien x biet
(2.x+1)mu 5 /(2.n+1)mu 2=1
2 mũ x+2 .2 mu x+........+10.2 mu x =10 . 11
dau / nay la dau chia
dau . nay la nhan do nhe!!!!
( 2x + 1 )5 : ( 2x + 1 )2 = 1
\(\Rightarrow\)( 2x+ 1 )3 = 1 = 13
\(\Rightarrow\)2x + 1 = 1
\(\Rightarrow\)2x = 0
\(\Rightarrow\)x = 0
2x + 2 . 2x + ... + 10 . 2x= 10 . 11
\(\Rightarrow\)2x . ( 1 + 2 + 3 + ... + 9 + 10 ) = 110
\(\Rightarrow\)2x . 55 = 110
\(\Rightarrow\)2x = 110 : 55
\(\Rightarrow\)2x = 2
\(\Rightarrow\)x = 1
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
3 mũ 4-x=81 là viết như này hả bn
\(3^{4-x}=81\) hay viết như này \(3^4-x=81\)
Hoang Thi Thanh Tra
viet nhu cai thu nhat
[1/2x mu 2(2x-1) mu m-1/2 x mu(m +2]:1/2x mu 2 =0
tim x
tim x biet
2 mu x x 2 x 3 mu x +1
tim so tu nhien x,y biet x*20+(x+1)*11=2020*y
* la mu nha
* là mũ hay nhân bạn
Cho C= xmu 10- xmu 5+ x mu 2 - x mu 1 =1 tim x de C=0
Cho C= xmu 10- xmu 5+ x mu 2 - x mu 1 =1 tim x de C=0
tim so tu nhien x
3 mu x cong 3 mu x cong 1 cong 3 mu x cong 2 = 1053
Ta có: 3x +3x+1+3x+2= 3x x 30 +3x x 31 +3x x 32=1053
Suy ra: 3x x(30+31+32)=3x x(1+3+9)=3x x 13=1053
Suy ra: 3x =1053:13=81
Mà 34 = 81
Vậy x = 4
Tim x,y la so nguyen
a) 2x-3y+5= xy
b) x mu 2 +2xy+2x+4y
B2 Tim x,y la so nguyen to
x mu 2 -2y mu 2 =1
B3 Tim so tu nhienx,y
7 .(x-2004) mu 2 = 23- y mu 2