Question

Помогите пж дою сразу 75 очков

Answer 1

Ответ:

$\frac{x - 4 {x}^{2} }{x + 2} + \frac{3 {x}^{2} - x }{x + 2} = \frac{x - 4 {x}^{2} + 3 {x}^{2} - x }{x + 2} = - \frac{ {x}^{2} }{x + 2}$

$\frac{x + 4 {x}^{2} }{x + 2} - \frac{4 {x}^{2} - x }{x + 2} = \frac{x + 4 {x}^{2} - 4 {x}^{2} + x }{x + 2} = \frac{2x}{x + 2}$

$\frac{x + 4 {x}^{2} }{x - 2} - \frac{4 { x }^{2} - x}{2 - x} = \frac{x + 4 {x}^{2} + 4 {x}^{2} - x }{x - 2} = \frac{8 {x}^{2} }{x - 2}$

$\frac{4 {x}^{2} - 5x }{ {x}^{2} + 2x } + \frac{2x}{ {x}^{2} + 2x} = \frac{4 {x}^{2} - 3x }{ {x}^{2} + 2x } = \frac{x(4x - 3)}{x(x + 2)}$

$\frac{x}{ {x}^{2} - 4 } - \frac{1}{x + 2} = \frac{x - x + 2}{ {x}^{2} - 4 } = \frac{2}{ {x}^{2} - 4 }$