Question

2^12x-1-4^6x-1+8^4x-1-16^3x-1=1280

Answer 1

$2^{12x-1} -2 ^{12x-2} +2 ^{12x-3} -2 ^{12x-4} =1280$
$2^{12x-4}*(8-4+2-1)=1280$
$2^{12x-4} *5=1280$
$2^{12x-4}=256=2^8$
12x-4=8
12x=12
x=1

Answer 2

большое спасибооо