Question

решите неравенство (x+2)^2>(x-5)^2

Answer 1

$(x+2)^2\ \textgreater \ (x-5)^2\\ x^2+4x+4\;\;|\;\;x^2-10x+25\\x^2+4x+4\ \textgreater \ x^2-10x+25\\4x+10x\ \textgreater \ 25-4\\14x\ \textgreater \ 21\;\;|:14\\x\ \textgreater \ \frac{3}{2}$