Question

помогите пожалуйста не могу даю 35 баллов , СПАСИБО ЗА РАНЕЕ

Answer 1

$frac{3a}{ {b}^{2} } times frac{ab + {b}^{2} }{9} = \ = frac{3a}{b times b} times frac{b(a + b)}{3 times 3} = \ = frac{a(a + b)}{3b}$
$( {x}^{2} - 4) times frac{2x}{(x + 2) ^{2} } = \ = (x - 2)(x + 2) times frac{2x}{(x + 2) ^{2} } = \ = frac{2x(x - 2) }{x + 2}$
$frac{6a}{ {x}^{2} - x } times frac{2x - 2}{3ax} = \ = frac{2 times 3a times 2(x - 1)}{x(x - 1) times 3a times x} = \ = frac{4}{ {x}^{2} }$
$frac{ {x}^{2} - 16 }{ {x}^{3} - 3 {x}^{2} } times frac{ {x}^{2} - 9 }{ {x}^{2} + 4x } = \ = frac{(x - 4)(x + 4)(x - 3)(x + 3)}{ {x}^{2}(x - 3)x(x + 4) } =\ = frac{(x - 4)(x + 3)}{ {x}^{3} }$