Question

21a+8xy³-24y²-7axy
Помогите пожалуйста ​

Answer 1

21a+8xy³-24y²-7axy = 3(7а-8у²)-ху×(-8у²+7а) = (7а-8у²)×(3-ху).

Answer 2

$21a+8xy^3-24y^2-7axy=3(7a-8y^2)-xy(-8y^2+7a)=(7a-8y^2)(3-xy)$