Question

[duong le]

1/2(2ⁿ⁺⁴ + 2ⁿ)=17

Answer 1

[Akai Haruma]

Lời giải:

$\frac{1}{2}(2^{n+4}+2^n)=17$

$2^{n+4}+2^n=17:\frac{1}{2}$

$2^n(2^4+1)=34$

$2^n.17=34$
$2^n=34:17=2=2^1$

$\Rightarrow n=1$