Question

Simplify the following expression fully:

$(m-2n)(m^2-6mn-n^2)$

Answer 1

$m^3-4m^2n-14mn^2-2n^3$

Answer 2

m^3-6m^2n-mn^2-2nm^2+2n^3
ANS)m^3-8m^2n+11mn^2+2n^3