Question

Решение неравенства : 2^x + 2^x+3 < 9

Answer 1

$2^x+2^{x+3} textless 9\\2^x(1+2^3) textless 9\\2^x(1+8) textless 9\\2^x*9 textless 9 |:9\\2^x textless 1\\2^x textless 2^0\\2 textgreater 1\\x textless 0\\xin(-infty;0)$