Question

Factorización y luego simplifica ​

Answer 1

$\frac{ {a}^{2} - 6a + 9}{ {a}^{2} - {3}^{2} } = \frac{ {(a - 3)}^{2} }{(a + 3)(a - 3)}$

$\frac{a - 3}{a + 3}$

$\frac{ {x}^{2} - {5}^{2} }{ {x}^{2} + 2x - 15 } = \frac{(x + 5)(x - 5)}{(x + 5)(x - 3)}$

$\frac{x - 5}{x - 3}$

$\frac{ {x}^{2} - {y}^{2} }{zy+ y + xz + x} = \frac{(x + y)(x - y)}{ y(z + 1) + x(z + 1)} = \frac{(x + y)(x - y)}{(y + x)(z + 1)}$

$\frac{x - y}{z + 1}$