Question

спростити вираз a+4/a^2-6a+9 : a^2-16/ a-3 - 2/a-4

Answer 1

Объяснение:

$a + \frac{4}{ {a}^{2} } - 6a + 9 \div {a}^{2} - \frac{16}{a} - 3 - \frac{2}{a} = - 5a + \frac{4}{ {a}^{2} } + \frac{9}{ {a}^{2} } - \frac{16}{a} - 3 - \frac{2}{a} = \frac{ - 5 {a}^{3} + 4 + 9 - 16a - 3 {a}^{2} - 2a}{ {a}^{2} } = \frac{ - 5 {a}^{3} + 13 - 18a - 3 {a}^{2} }{ {a}^{2} } = \frac{ - 5 {a}^{3} - 3 {a}^{2} - 18a + 13}{ {a}^{2} }$