Question

Va rog mult!!!!!!!! ​

Answer 1

a)

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

b)

$\frac{ {x}^{2} - 16 }{ {x}^{2} - 8x + 16 } = \frac{(x - 4)(x + 4) }{ {(x - 4)}^{2} } = \frac{x + 4}{x - 4}$