Question

x apartine lui r\{0},rezultatul calculului 10/3x - x/3 + 5/x este
urgeent​

Answer 1

$\frac{10}{3x} - \frac{x}{3} + \frac{5}{x} =$

$= \frac{10}{3x} - \frac{ {x}^{2} }{3x} + \frac{15}{3x} =$

$= \frac{10 - {x}^{2} + 15}{3x} =$

$= \frac{25 - {x}^{2} }{3x} =$

$= \frac{(5 - x)(5 + x)}{3x}$