Question

quanto e (-5-2y)^2 presiso de ajuda

Answer 1

(-5 - 2y )² = 4y² + 20y + 25

     - 5 - 2y
     - 5 - 2y
-----------------------
   25 + 10y
       + 10y + 4y²
-------------------------------
25 + 20y + 4y²

Answer 2

$(-5-2y)^{2}$
$(-5)^{2} +2.(-5).(-2y)+(-2y)^{2}$
$25+20y+4y^{2}$
$4y^{2} +20y+25$