What is the product of A plus 3 and negative 2 A squared plus 15 A plus 6 b squared ?
A
negative 2 A cubed plus 9 A squared plus 45 A plus 24 b squaredB
negative 2 A cubed plus 9 A squared plus 45 A plus 6 A b squared plus 18 b squaredC
negative 2 A cubed plus 21 A squared plus 45 A plus 24 b squaredD
negative 2 A cubed plus 21 A squared plus 45 A plus 6 A b squared plus 18 b squared