الف) $\frac{(x+1)^{2}}{x^{2}-1} = \frac{(x+1)(x-1)}{(x-1)(x+1)} = x=0$

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

ج) $\frac{x^{2}+4x+3}{2x^{2}-36} = \frac{(x+3)(x+1)}{(2x^{2}-6)(2x^{2}+6)}$