tim x biet 2^n=251
Những câu hỏi liên quan
tim so tu nhien x biet
a) 15.x<750
b) 3(x-12)=36
c) (x+251)-301=56
d) 152+(x+231):2=358
3(x-12)=36
=>x-12=36:3
=>x-12=12
=>x=12+12
=>x=24
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tim n biet ,D=6n-7/n-2 C=n/n+1
tim x biet x-1/x-2 >0
Tim x biet 2^n+4.2^n=5.2^5
Tim x,y €N biet: x.(y-2)=8
tim x,y thuoc N* biet 1+x+x^2+x^3=2^y
Tim n thuoc N biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x+y =8
Tim n thuoc N , biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x + y = 8
tim cac so tu nhien x , y biet :2^m+2^n=2^m+n
\(2^m+2^n=2^{m+n}\)
\(\Rightarrow2^{m+n}-2^m-2^n=0\)
\(\Rightarrow\left(2^{m+n}-2^m\right)-\left(2^n-1\right)=1\)
\(\Rightarrow2^m\left(2^n-1\right)-\left(2^n-1\right)=1\)
\(\Rightarrow\left(2^m-1\right)\left(2^{n-1}\right)=1\)
\(\Rightarrow\left\{\begin{matrix}2^n-1=1\\2^m-1=1\end{matrix}\right.\)\(\Rightarrow m=n=1\)
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Tim x thuoc N biet ( x - 2 )^2016 + /x -3/=1
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