Question

-4xy(4x2 + 7y - 8xy)​

Answer 1

$- 4xy( {4x}^{2} + 7y - 8xy)$

$- 4xy( {4x}^{2} )- 4xy(7y)- 4xy( - 8xy)$

$- 16 {x}^{3} y - 28 {xy}^{2} + 32 {x}^{2} {y}^{2}$