Question

Expand.
(1) (a +2)(a - 1)​

Answer 1

SOLUTION

$= > (a + 2)(a - 1) \\ = > a(a - 1) + 2(a - 1) \\ = > {a}^{2} - a + 2a - 2 \\ = > {a}^{2} + a - 2$

hope it helps ☺️

Answer 2

Answer:

$= > (a + 2)(a - 1) \\ \\ = > a(a - 1) + 2(a - 1) \\ \\ = > {a}^{2} - a + 2a - 2 \\ \\ = > {a}^{2} + a - 2$