Question

Lgx+2lg2<0,5lg49-lg5

Answer 1

$lgx + lg 2^{2} textless lg 49^{ frac{1}{2} } - lg5 \ lgx + lg4 textless lg7 - lg5 \ lg4x textless lg frac{7}{5} \ left { {{4x textgreater 0} atop {4x textless frac{7}{5} }} right. left { {{x textgreater 0} atop {x textless frac{7}{20} }} right.$
x∈ (0;7/20)