Question

(1/2)^(20-2x)=64
помогите решить

Answer 1

$(frac{1}{2} )^{20-2x} =64$

$2^{-(20-2x)}=2^{6}$

$-20+2x=6$

$2x=26$

$x=13$

Answer 2

${ frac{1}{2} }^{20 - 2x} = 64 \ { {(2}^{ - 1}) }^{20 - 2x } = {2}^{6} \ - 20 + 2x = 6 \ 2x = 26 \ x = 13$