Question

Решите умножение дробей

Answer 1

$\frac{ {x}^{3} - 8}{ {x}^{2} - 49} \times \frac{x + 7}{ {x}^{2} + 2x + 4} = \frac{(x - 2)( {x}^{2} + 2x + 4) (x + 7)}{(x - 7)(x + 7)( {x}^{2} + 2x + 4)} = \frac{x - 2}{x - 7}$