Question

Упростите выражение

Answer 1

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