Question

помогите)
1/ х2 - 9 + 2-х / х-3

Answer 1

$frac{1}{ x^{2} -9} + frac{2-x}{x-3} = frac{1}{(x-3)(x+3)}+ frac{2-x}{x-3}= frac{1+(x+3)(2-x)}{(x-3)(x+3)}= frac{2-x}{x-3}$