disequazioni

Question

numero 338 [attach]92918[/attach]

LucianoP · Accepted Answer

x^3 + x^2 - 25·x - 25 > 0 (x^3 + x^2) - (25·x + 25) > 0 x^2·(x + 1) - 25·(x + 1) > 0 (x + 1)·(x^2 - 25) > 0 (x + 1)·(x + 5)·(x - 5) > 0 [attach]92922[/attach] -5 < x < -1 ∨ x > 5

disequazioni

Domande