Question

СРОЧНО! 7*2^(x+1)+2^(x)-2^(x+1)=52

Answer 1

$7 times {2}^{x + 1} + {2}^{x} - {2}^{x + 1} = 52 \ 6 times {2}^{x + 1} + {2}^{x} = 52 \ {2}^{x} (12 + 1) = 4 times 13 \ 13 times {2}^{x} = 13 times {2}^{2} \ x = 2$