Question

Решите неравенство x^2-(x-5)(x+5)+x < 2x

Answer 1

x²-x²+25+x-2x<0
-x<-25
x>25
x∈(25;∞)

Answer 2

$x^2-(x-5)(x+5)+x textless 2x \ x^2-(x^2-25)+x textless 2x \ x^2-x^2+25+x textless 2x \ 2x-x textgreater 25 \ x textgreater 25$

Ответ:  $xin(25;+infty)$