Question

va rog repede exercitiul 48

Answer 1

Răspuns:

Explicație pas cu pas:

[(x - 1)(x + 1) - x^2]/x(x + 1) = (x^2 - 1 - x^2)/x(x + 1) = -1/x(x + 1)

Answer 2

$\frac{x-1}{x} -\frac{x}{x+1} =\frac{(x-1)(x+1)}{x(x+1)} -\frac{x^{2} }{x(x+1)} = \frac{x^{2} -1-x^{2} }{x(x+1)} =-\frac{1}{x(x+1)}$