Question

Ajuda, não entendi...
Fatore, se necessário, simplifique e calcule o produto:
d) 2a+2/x²-y² . 2x+2y/a+1

Answer 1

$\large\boxed{\begin{array}{l}\sf\dfrac{2a+2}{x^2-y^2}\cdot\dfrac{2x+2y}{a+1}\\\\\sf\dfrac{2\cdot\diagdown\!\!\!\!\!(a+\diagdown\!\!\!\!\!1)}{(x-y)\diagdown\!\!\!\!\!(x+\diagdown\!\!\!\!\!y)}\cdot\dfrac{2\cdot\diagdown\!\!\!\!\!(x+\diagdown\!\!\!\!\!y)}{\diagdown\!\!\!\!\!(a+\diagdown\!\!\!\!\!1)}\\\\\sf\dfrac{4}{x-y}\end{array}}$