Question

Спростити вираз .,.,,.,.,…,

Answer 1

$( \frac{3x + 1}{3x - 1} - \frac{3x - 1}{3x + 1}) \div \frac{4x}{18 {x}^{2} - 2 }$

$\frac{(3x + 1 {)}^{2} - (3x - 1 {)}^{2} }{(3x - 1) \times (3x + 1)} \times \frac{18 {x}^{2} - 2 }{4x}$

$\frac{2 \times 6x}{(3x - 1) \times (3x + 1)} \times \frac{2(9 {x}^{2} - 1) }{4x}$

$\frac{12x}{(3x - 1) \times (3x + 1)} \times \frac{2(3x - 1) \times (3x + 1)}{4x}$

$3 \times 2$

$6$