Question

$\frac{ {x}^{2} - 6x - 7 }{ {x}^{2} - 9x + 14 }$
Сократите дробь.
60 баллов​

Answer 1

$\frac{x {}^{2} + x - 7x - 7 }{x { }^{2} - 2x - 7x + 14}$

$\frac{x \times (x + 1) - 7(x + 1)}{x \times (x - 2) - 7(x - 2)}$

$\frac{(x + 1) \times (x - 7)}{(x - 2)x(x - 7)}$

$\frac{ x+ 1}{x - 2}$