Question

Mentionati conditiile de existenta si aduceti fractiile la acelasi numitor:
b) 2/x+1 si 3/x-1;
c) 4/x, 1/3x si 2/x+1.

Answer 1

Răspuns

Explicație pas cu pas:

b) x ≠ ±1;

$\frac{2}{x+1}  , \frac{3}{x-1}   \\\frac{2(x-1)}{x^{2} -1\\}  , \frac{3(x+1)}{x^{2}-1 }$

c) x ≠ 0;

$\frac{4}{x}     \frac{1}{3x}   \frac{2}{x+1} \\\frac{3.4(x+1)}{3x(x+1)}   \frac{x+1}{3x(x+1)}  \frac{2.3x}{3x(x+1)} \\\\\frac{12(x+1)}{3x(x+1)}   \frac{x+1}{3x(x+1)}  \frac{6x}{3x(x+1)}$

Sper ca nu am gresit. Nu am mai facut asta de peste n ani.