Question

Сведите к общему знаменателю дроби.

хоть бы 1 или 2

Answer 1

$1)\frac{3}{x^{2}+xy }=\frac{3}{x(x+y)}=\frac{3y}{xy(x+y)}\\\\\frac{2}{xy+y^{2}}=\frac{2}{y(x+y)} =\frac{2x}{xy(x+y)} \\\\\\2)\frac{x}{x^{2}-y^{2}}\\\\\frac{x}{x+y}=\frac{x*(x-y)}{(x+y)(x-y)}=\frac{x(x-y)}{x^{2}-y^{2}} \\\\\\3)\frac{m}{m^{2}+2mn+n^{2}}=\frac{m}{(m+n)^{2}} \\\\\frac{n}{m+n}=\frac{n*(m+n)}{(m+n)*(m+n)}=\frac{n(m+n)}{(m+n)^{2}}$