Toán Lớp 6: 2^n . 4^2 – $2^{n+1}$ = 2^6 – 2^3
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Toán Lớp 6: 2^n . 4^2 – $2^{n+1}$ = 2^6 – 2^3
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Comments ( 2 )
=>2^n . 16-2^n . 2=64-8
=>2^n . (16-2)=56
=>2^n . 14=56
=>2^n = 56:14
=>2^n=4
=>2^n=2^2
=>n=2
Vậy n=2