=> 2x+1+x = 32
=> 22x+1=32
=> 22x+1=25
=>2x+1=5
=>2x=4
=>x=2
a , 2x +1 . 2x = 32
=> 2x .2 .2x = 32
=>2x.2x= 32 :2 =16
=>2x = 4 = 22
=>x =2
\(2^{x+1}.2^x=32\)
\(2^{x+1}.2^x=2^5\left(32=2^5\right)\)
\(2^{x+1+x}=2^5\)
\(2^{2x+1}=2^5\)
\(\Rightarrow2x+1=5\)
\(2x=5-1\)
\(2x=4\)
\(x=4:2\)
\(x=2\in N\)
\(\Rightarrow x=2\)
=> x =2 nhé bn
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