Question

PLZ HELPP!!!

Answer 1

Answer:

Given that: $\frac{x-y}{x+y} - \frac{x+y}{x-y}$

Take LCM of x+y and x-y is, $x^2-y^2$

then;

$\frac{(x-y)^2 -(x+y)^2}{x^2-y^2}$

Using the identities rule:

$(a+b)^2 = a^2+2ab+b^2$

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

Combine like terms;

$\frac{-4xy}{x^2-y^2}$

Therefore, the answer is, $\frac{-4xy}{x^2-y^2}$