Question

factorise
$4x {}^{2} - 12x {}^{2} y + 16x {}^{2} y {}^{3}$
​

Answer 1

$4x {}^{2} - 12x {}^{2} y + 16x {}^{2} y {}^{3} \\ {x}^{2} (4 - 12y + 16 {y}^{3} ) \\ 4 {x}^{2} (1 - 3y + 4 {y}^{3} ) \\ 4 {x}^{2} (y + 1)(2y - 1)^{2}$

hope it helps