Question

Me ajudem por favor

Answer 1

a)
$\frac{x { }^{2} - 4}{x {}^{2} + 2x } + \frac{1}{x} = \frac{(x - 2) - (x + 2)}{x \times (x + 2)} + \frac{1}{x} = \frac{ \times - 1}{x}$
b)
$\frac{3x}{4} - \frac{x { {}^{} }^{2} + x}{x + 1} = \frac{3x}{4} - \frac{ x \times (x + 1)}{x + 1} = - \frac{x}{4}$