Question

срочно помогите решить

Answer 1

$(x-3) : frac{x^2-6x+9}{x+3} = (x-3) * frac{x+3}{(x-3)^2} = frac{x+3}{x-3} \ x=-21 \ frac{-21+3}{-21-3}= frac{-18}{-24} = frac{6*3}{6*4} = frac{3}{4} =0.75$