Question

Помогите! 8,9,10! Срочно!

Answer 1

$8) = \frac{2a + 3}{2(3 - a)} = \frac{ - (2a + 3)(a + 3)}{2(a - 3)(a + 3)} = - \frac{(2a + 3)(a + 3)}{2( {a}^{2} - 9) }$
$9) = \frac{7a \times 5xy}{3x {y}^{2} \times 5xy} = \frac{35axy}{15 {x}^{2} {y}^{3} }$
$10) = \frac{11( {x}^{2} - x + 1)}{(x + 1)( {x}^{2} - x + 1) } = \frac{11( {x}^{2} - x + 1) }{ {x}^{3} + 1}$