Question

Помогите пожалуйста срочно!!

Answer 1

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