Question

Помогите пожалуйста срочно!!

Answer 1

$(x + 5 + frac{15}{x - 5} ) div frac{ {x}^{2} - 10 }{25 - 10x + {x}^{2} } = frac{(x + 5)(x - 5) + 15}{x - 5} times frac{( {x - 5})^{2} }{ {x}^{2} - 10} = frac{( {x}^{2} - 25 + 15)(x - 5)}{ {x}^{2} - 10} = frac{( {x}^{2} - 10)(x - 5)}{ {x}^{2} - 10} = x - 5$