Question

Дам 25 баллов за уравнение.

Answer 1

Ответ:

1)

${3}^{3} {x}^{3} {y}^{ - 3} \times {3}^{ - 3} {x}^{ - 3} {y}^{ - 3} \\ y$

2)

$8xy \times ( \frac{ {y}^{2} }{ {2}^{ - 3} } ) {}^{2} \\ 8xy \frac{ {y}^{2} }{ {4x}^{ - 6} } \\ 2 {x}^{7} y \times {y}^{2} \\ 2 {x}^{7} y {}^{3}$

3)

$( {x}^{2} - {y}^{2} ) \times \frac{1}{x - y} \\ (x - y) \times (x + y) \times \frac{1}{x - y} \\ x + y$