Question

19. a cube+a -3a²-3​

Answer 1

Answer:

 cube is a region of space formed by six identical square faces joined along their edges. Three edges join at each corner to form a vertex. The cube can also be called a regular hexahedron. It is one of the five regular polyhedrons, which are also sometimes referred to as the Platonic solids.

Answer 2

Answer:

(a^2+1) (a-3)

Step-by-step explanation:

a^3+a-3a^2-3

(a^3+a) (-3a^2-3)

a(a^2+1) -3(a^2+1)

(a^2+1) (a-3)

Hope it will help you......