Question

$4 {x}^{2} - {y}^{2} + 4y - 4$
​

Answer 1

Answer:

jshsghdhddgdgxhdhszhzh

Answer 2

$\mathfrak {\huge \underline{Question:}} \\\\\sf 4 {x}^{2} - {y}^{2} + 4y - 4$

$\mathfrak {\huge \underline{Answer:}}$

$\sf 4x^2-(y^2-2y-2y-4) \\\\\sf \longrightarrow 4x^2 - (y-2)(y-2)$