Question

помогите решить пожалуйста​

Answer 1

а). 4/х^2

б). 4а/в

в). (3х-1)/2

г). у/х

Answer 2

Ответ:

$\frac{52 {y}^{4} \times {x}^{3} }{ {x}^{5} \times 13 {y}^{4} } = \frac{4}{ {x}^{2} }$

$\frac{64 {a}^{2} c}{b} \div (16ac) = \frac{64 {a}^{2} c}{b} \times \frac{1}{16ac} = \frac{4a}{b}$

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

$\frac{y - x}{y} \times ( \frac{y}{y - x} + \frac{y}{x} ) = \frac{y - x}{y} \times ( \frac{xy + y(y - x)}{x(y - x)} = \frac{y - x}{y} \times ( \frac{xy + {y}^{2} - xy }{x(y - x)} ) = \frac{y - x}{y} \times \frac{ {y}^{2} }{x(y - x)} = \frac{1}{x}$