Question

решите неравенство (1/3)^2-4x<1/27

Answer 1

$(frac{1}{3})^{2}-4x<frac{1}{27}\frac{1}{9}-4x<frac{1}{27}\-4x<frac{1}{27}-frac{1}{9}\-4x<-frac{2}{27}\x>frac{1}{54}\xin(frac{1}{54};+infty)$