Question

С РЕШЕНИЕМ.спс заранее​

Answer 1

Ответ:

(x-10y^3)/2y+5y^2=(x-10y^3)/2y+(5y^2*2y)/2y=(x-10y^3+5y^2*2y)/2y=

=(x-10y^3+10y^3)/2y=x/2y=-18/(4,5*2)=-18/9=-2

Answer 2

$\frac{x - 10 {y}^{3} }{2y} + \frac{5y}{1} = \frac{x - 10 {y}^{3} + 10 {y}^{3} }{2y} = \frac{x}{2y} \\ x = - 18 \\ y = 4.5 \\ \frac{x}{2y} = \frac{ - 18}{2 \times 4.5} = \frac{ - 18}{9} = - 2$