помогите, срочно!!
[tex] \frac{x {}^{2} - 9 }{x {}^{2} - 5x} \times \frac{x - 5}{x + 3} [/tex]

[tex] \frac{m + 2n}{2 - 3m} \div \frac{m { } +^{2} + 4mn + 4n {}^{2} }{3m {}^{2} - 2m } [/tex]