Question

2. Multiply the following
(1) (a + 2b ) (a^{2} - 3b)

Answer 1

Answer:

a^2(a+b)-9ab.

Step-by-step explanation:

a^3+2a^2b-9ab

Answer 2

Step-by-step explanation:

$(a + 2b)( {a}^{2} - 3b) = {a}^{3} - 3ab + 2 {a}^{2} b - 6ab \\ {a}^{3 } + 2 {a}^{2} b - 9ab$