Question

Помогите пж),20 баллов отдам

Answer 1

I hope this helps you

Answer 2

$frac{2a}{51 {x}^{6} y} 17 {x}^{7} y = frac{2ax}{3} \ frac{24 {b}^{2}c }{3 {a}^{6} } div frac{16bc}{ {a}^{5} } = \ = frac{24 {a}^{5}{b}^{2}c }{48 {a}^{6} bc} = frac{b}{2a} \ frac{5x + 10}{x - 1} times frac{ {x}^{2} - 1}{ {x}^{2} - 4 } = \ = frac{5(x + 2)}{(x - 1)} times frac{(x - 1)(x + 1)}{(x - 2)(x + 2)} = \ = frac{5(x + 1)}{x - 2}$
$frac{y + c}{c} ( frac{c}{y} - frac{c}{y + c} ) = \ = frac{(y + c)}{c}frac{(cy + {c}^{2} - cy)}{y(y + c)} = \ = frac{c}{y}$