Question

if x/y+y/x=-1 then the value of x3-y3 is ​

Answer 1

Answer:

The firmula of solving the perimeter of a rectangle is

Answer 2

Answer:

Step-by-step explanation:

$\frac{x}{\frac{y+y}{x} } = -1\\\\\frac{x*x}{y+y} = -1\\\\\frac{x^2}{2y} =-1\\\\x^{2} = -2y\\\\x = \sqrt{-2y} \\\\\\\\x^3-y^3\\\\(\sqrt{-2y})^3- y^3\\\\-2y\sqrt{-2y} - y^3\\\\-y(2\sqrt{-2y} +y^2)$