Question

Помогите пж!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$frac{x(x + 1) - 4(x + 3)}{(x + 3)(x + 1) } = frac{x ^{2} + x - 4x - 12 }{x^{2} + x + 3x + 3 } = frac{x^{2} - 3x - 12 }{ {x}^{2} + 4x + 3 }$

думаю всё понятно