Question

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Answer 1

а)

$\frac{(a + b) \times 5}{ab \times 5} = \frac{5a + 5b}{5ab}$

$\frac{(a + b) \times ab}{ab \times ab} = \frac{ {a}^{2}b + a {b}^{2} }{ {a}^{2} {b}^{2} }$

$\frac{(a + b) \times a}{ab \times a} = \frac{ {a}^{2} + ab }{ {a}^{2}b }$

$\frac{(a + b) \times ( - {b}^{2}) }{ab \times( - {b}^{2}) } = \frac{ - a {b}^{2} - {b}^{3} }{ - a {b}^{3} }$

б)

$\frac{x \times x}{(x - y) \times x} = \frac{ {x}^{2} }{ {x}^{2} - xy }$

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

в)

$\frac{(m - 2) \times (m + 2)}{(m + 2) \times (m + 2)} = \frac{ {m}^{2} + 4 }{ {(m + 2)}^{2} }$

$\frac{(m - 2) \times 2m}{(m + 2) \times 2m} = \frac{2 {m}^{2} - 4m }{2 {m}^{2} + 4m }$

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